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Subjective Questions

Playing with Constructions

Playing with Constructions · Class 6 Mathematics

Practise 50 short and long answer questions on Playing with Constructions from Playing with Constructions. Try writing your own answer first, then tap the question to compare it with the model answer and read the explanation behind it.

Practise MCQs for this section All sections
1 Describe a careful ruler-and-compass method to draw a circle of radius 4 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 4 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 4 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

2 Describe a careful ruler-and-compass method to draw a circle of radius 5 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 5 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 5 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

3 Describe a careful ruler-and-compass method to draw a circle of radius 6 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 6 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 6 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

4 Describe a careful ruler-and-compass method to draw a circle of radius 7 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 7 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 7 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

5 Describe a careful ruler-and-compass method to draw a circle of radius 8 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 8 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 8 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

6 Describe a careful ruler-and-compass method to draw a circle of radius 9 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 9 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 9 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

7 Describe a careful ruler-and-compass method to draw a circle of radius 1 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 1 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 1 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

8 Describe a careful ruler-and-compass method to draw a circle of radius 2 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 2 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 2 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

9 Describe a careful ruler-and-compass method to draw a circle of radius 3 cm and mark its centre. 3 marks
Model answer
  • Step 1: Mark a point O as the centre. - Step 2: Open the compass to 3 cm using the ruler. - Step 3: Place the compass point at O and rotate it to draw the circle.
  • Step 1: Mark a point O as the centre.
  • Step 2: Open the compass to 3 cm using the ruler.
  • Step 3: Place the compass point at O and rotate it to draw the circle.
Explanation

A compass keeps the distance from the centre fixed, so every point on the circle is the same radius away.

10 Describe how to construct a line segment of length 3 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 3 cm mark. - Step 3: Measure AB again to check it is 3 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 3 cm mark.
  • Step 3: Measure AB again to check it is 3 cm.
Explanation

A ruler is used to mark and verify a specified length.

11 Describe how to construct a line segment of length 4 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 4 cm mark. - Step 3: Measure AB again to check it is 4 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 4 cm mark.
  • Step 3: Measure AB again to check it is 4 cm.
Explanation

A ruler is used to mark and verify a specified length.

12 Describe how to construct a line segment of length 5 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 5 cm mark. - Step 3: Measure AB again to check it is 5 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 5 cm mark.
  • Step 3: Measure AB again to check it is 5 cm.
Explanation

A ruler is used to mark and verify a specified length.

13 Describe how to construct a line segment of length 6 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 6 cm mark. - Step 3: Measure AB again to check it is 6 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 6 cm mark.
  • Step 3: Measure AB again to check it is 6 cm.
Explanation

A ruler is used to mark and verify a specified length.

14 Describe how to construct a line segment of length 7 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 7 cm mark. - Step 3: Measure AB again to check it is 7 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 7 cm mark.
  • Step 3: Measure AB again to check it is 7 cm.
Explanation

A ruler is used to mark and verify a specified length.

15 Describe how to construct a line segment of length 8 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 8 cm mark. - Step 3: Measure AB again to check it is 8 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 8 cm mark.
  • Step 3: Measure AB again to check it is 8 cm.
Explanation

A ruler is used to mark and verify a specified length.

16 Describe how to construct a line segment of length 9 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 9 cm mark. - Step 3: Measure AB again to check it is 9 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 9 cm mark.
  • Step 3: Measure AB again to check it is 9 cm.
Explanation

A ruler is used to mark and verify a specified length.

17 Describe how to construct a line segment of length 10 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 10 cm mark. - Step 3: Measure AB again to check it is 10 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 10 cm mark.
  • Step 3: Measure AB again to check it is 10 cm.
Explanation

A ruler is used to mark and verify a specified length.

18 Describe how to construct a line segment of length 11 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 11 cm mark. - Step 3: Measure AB again to check it is 11 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 11 cm mark.
  • Step 3: Measure AB again to check it is 11 cm.
Explanation

A ruler is used to mark and verify a specified length.

19 Describe how to construct a line segment of length 12 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 12 cm mark. - Step 3: Measure AB again to check it is 12 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 12 cm mark.
  • Step 3: Measure AB again to check it is 12 cm.
Explanation

A ruler is used to mark and verify a specified length.

20 Describe how to construct a line segment of length 13 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 13 cm mark. - Step 3: Measure AB again to check it is 13 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 13 cm mark.
  • Step 3: Measure AB again to check it is 13 cm.
Explanation

A ruler is used to mark and verify a specified length.

21 Describe how to construct a line segment of length 14 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 14 cm mark. - Step 3: Measure AB again to check it is 14 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 14 cm mark.
  • Step 3: Measure AB again to check it is 14 cm.
Explanation

A ruler is used to mark and verify a specified length.

22 Describe how to construct a line segment of length 15 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 15 cm mark. - Step 3: Measure AB again to check it is 15 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 15 cm mark.
  • Step 3: Measure AB again to check it is 15 cm.
Explanation

A ruler is used to mark and verify a specified length.

23 Describe how to construct a line segment of length 16 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 16 cm mark. - Step 3: Measure AB again to check it is 16 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 16 cm mark.
  • Step 3: Measure AB again to check it is 16 cm.
Explanation

A ruler is used to mark and verify a specified length.

24 Describe how to construct a line segment of length 17 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 17 cm mark. - Step 3: Measure AB again to check it is 17 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 17 cm mark.
  • Step 3: Measure AB again to check it is 17 cm.
Explanation

A ruler is used to mark and verify a specified length.

25 Describe how to construct a line segment of length 18 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 18 cm mark. - Step 3: Measure AB again to check it is 18 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 18 cm mark.
  • Step 3: Measure AB again to check it is 18 cm.
Explanation

A ruler is used to mark and verify a specified length.

26 Describe how to construct a line segment of length 19 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 19 cm mark. - Step 3: Measure AB again to check it is 19 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 19 cm mark.
  • Step 3: Measure AB again to check it is 19 cm.
Explanation

A ruler is used to mark and verify a specified length.

27 Describe how to construct a line segment of length 20 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 20 cm mark. - Step 3: Measure AB again to check it is 20 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 20 cm mark.
  • Step 3: Measure AB again to check it is 20 cm.
Explanation

A ruler is used to mark and verify a specified length.

28 Describe how to construct a line segment of length 21 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 21 cm mark. - Step 3: Measure AB again to check it is 21 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 21 cm mark.
  • Step 3: Measure AB again to check it is 21 cm.
Explanation

A ruler is used to mark and verify a specified length.

29 Describe how to construct a line segment of length 22 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 22 cm mark. - Step 3: Measure AB again to check it is 22 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 22 cm mark.
  • Step 3: Measure AB again to check it is 22 cm.
Explanation

A ruler is used to mark and verify a specified length.

30 Describe how to construct a line segment of length 23 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 23 cm mark. - Step 3: Measure AB again to check it is 23 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 23 cm mark.
  • Step 3: Measure AB again to check it is 23 cm.
Explanation

A ruler is used to mark and verify a specified length.

31 Describe how to construct a line segment of length 24 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 24 cm mark. - Step 3: Measure AB again to check it is 24 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 24 cm mark.
  • Step 3: Measure AB again to check it is 24 cm.
Explanation

A ruler is used to mark and verify a specified length.

32 Describe how to construct a line segment of length 25 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 25 cm mark. - Step 3: Measure AB again to check it is 25 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 25 cm mark.
  • Step 3: Measure AB again to check it is 25 cm.
Explanation

A ruler is used to mark and verify a specified length.

33 Describe how to construct a line segment of length 26 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 26 cm mark. - Step 3: Measure AB again to check it is 26 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 26 cm mark.
  • Step 3: Measure AB again to check it is 26 cm.
Explanation

A ruler is used to mark and verify a specified length.

34 Describe how to construct a line segment of length 27 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 27 cm mark. - Step 3: Measure AB again to check it is 27 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 27 cm mark.
  • Step 3: Measure AB again to check it is 27 cm.
Explanation

A ruler is used to mark and verify a specified length.

35 Describe how to construct a line segment of length 28 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 28 cm mark. - Step 3: Measure AB again to check it is 28 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 28 cm mark.
  • Step 3: Measure AB again to check it is 28 cm.
Explanation

A ruler is used to mark and verify a specified length.

36 Describe how to construct a line segment of length 29 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 29 cm mark. - Step 3: Measure AB again to check it is 29 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 29 cm mark.
  • Step 3: Measure AB again to check it is 29 cm.
Explanation

A ruler is used to mark and verify a specified length.

37 Describe how to construct a line segment of length 30 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 30 cm mark. - Step 3: Measure AB again to check it is 30 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 30 cm mark.
  • Step 3: Measure AB again to check it is 30 cm.
Explanation

A ruler is used to mark and verify a specified length.

38 Describe how to construct a line segment of length 31 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 31 cm mark. - Step 3: Measure AB again to check it is 31 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 31 cm mark.
  • Step 3: Measure AB again to check it is 31 cm.
Explanation

A ruler is used to mark and verify a specified length.

39 Describe how to construct a line segment of length 32 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 32 cm mark. - Step 3: Measure AB again to check it is 32 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 32 cm mark.
  • Step 3: Measure AB again to check it is 32 cm.
Explanation

A ruler is used to mark and verify a specified length.

40 Describe how to construct a line segment of length 33 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 33 cm mark. - Step 3: Measure AB again to check it is 33 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 33 cm mark.
  • Step 3: Measure AB again to check it is 33 cm.
Explanation

A ruler is used to mark and verify a specified length.

41 Describe how to construct a line segment of length 34 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 34 cm mark. - Step 3: Measure AB again to check it is 34 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 34 cm mark.
  • Step 3: Measure AB again to check it is 34 cm.
Explanation

A ruler is used to mark and verify a specified length.

42 Describe how to construct a line segment of length 35 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 35 cm mark. - Step 3: Measure AB again to check it is 35 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 35 cm mark.
  • Step 3: Measure AB again to check it is 35 cm.
Explanation

A ruler is used to mark and verify a specified length.

43 Describe how to construct a line segment of length 36 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 36 cm mark. - Step 3: Measure AB again to check it is 36 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 36 cm mark.
  • Step 3: Measure AB again to check it is 36 cm.
Explanation

A ruler is used to mark and verify a specified length.

44 Describe how to construct a line segment of length 37 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 37 cm mark. - Step 3: Measure AB again to check it is 37 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 37 cm mark.
  • Step 3: Measure AB again to check it is 37 cm.
Explanation

A ruler is used to mark and verify a specified length.

45 Describe how to construct a line segment of length 38 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 38 cm mark. - Step 3: Measure AB again to check it is 38 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 38 cm mark.
  • Step 3: Measure AB again to check it is 38 cm.
Explanation

A ruler is used to mark and verify a specified length.

46 Describe how to construct a line segment of length 39 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 39 cm mark. - Step 3: Measure AB again to check it is 39 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 39 cm mark.
  • Step 3: Measure AB again to check it is 39 cm.
Explanation

A ruler is used to mark and verify a specified length.

47 Describe how to construct a line segment of length 40 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 40 cm mark. - Step 3: Measure AB again to check it is 40 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 40 cm mark.
  • Step 3: Measure AB again to check it is 40 cm.
Explanation

A ruler is used to mark and verify a specified length.

48 Describe how to construct a line segment of length 41 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 41 cm mark. - Step 3: Measure AB again to check it is 41 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 41 cm mark.
  • Step 3: Measure AB again to check it is 41 cm.
Explanation

A ruler is used to mark and verify a specified length.

49 Describe how to construct a line segment of length 42 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 42 cm mark. - Step 3: Measure AB again to check it is 42 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 42 cm mark.
  • Step 3: Measure AB again to check it is 42 cm.
Explanation

A ruler is used to mark and verify a specified length.

50 Describe how to construct a line segment of length 43 cm using a ruler, then check its length. 3 marks
Model answer
  • Step 1: Mark a point A and align the ruler with it. - Step 2: Mark point B at the 43 cm mark. - Step 3: Measure AB again to check it is 43 cm.
  • Step 1: Mark a point A and align the ruler with it.
  • Step 2: Mark point B at the 43 cm mark.
  • Step 3: Measure AB again to check it is 43 cm.
Explanation

A ruler is used to mark and verify a specified length.

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