Shape and space · Ages 8–9
Curve stitching worksheet
Part of: Parallel lines, quadrilaterals and triangles
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Curve stitching worksheet
Shape and space · Ages 8–9
Numsprite
numsprite.com
Name:Date:Score:／48
Write each answer in the space. For word problems, show your working and write a sentence answer.
Part A: Working out and filling in (2 marks each)
1.In curve stitching every point on the arms gets one thread (a few are drawn). How many threads are there when it is finished?
Answer:
2.In curve stitching the upright arm and the flat arm each have 12 points. Each thread joins a point on one arm to a point on the other, and every point gets one thread. How many threads are there?
Answer:
3.In curve stitching the upright arm and the flat arm each have 10 points. Each thread joins a point on one arm to a point on the other, and every point gets one thread. How many threads are there?
Answer:
4.In curve stitching the upright arm and the flat arm each have 9 points. Each thread joins a point on one arm to a point on the other, and every point gets one thread. How many threads are there?
Answer:
5.In curve stitching the upright arm and the flat arm each have 7 points. Each thread joins a point on one arm to a point on the other, and every point gets one thread. How many threads are there?
Answer:
6.In curve stitching the upright arm and the flat arm each have 8 points. Each thread joins a point on one arm to a point on the other, and every point gets one thread. How many threads are there?
Answer:
7.Some threads of this curve stitching are drawn. How many more are needed to finish?
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8.Follow the pattern in the picture. Point 5 on the upright arm joins which point on the flat arm?
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9.Follow the pattern in the picture. Point 4 on the upright arm joins which point on the flat arm?
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10.Follow the pattern in the picture. Point 8 on the upright arm joins which point on the flat arm?
Answer:
11.Follow the pattern in the picture. Point 9 on the upright arm joins which point on the flat arm?
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12.Follow the pattern in the picture. Point 11 on the upright arm joins which point on the flat arm?
Answer:
Part B: Word problems (4 marks each)
13.Ka-yan does curve stitching with 20 points on each arm, each point getting a thread. Ka-yan stitches 4 threads a minute. How many minutes does it take?
Working:
Answer:
14.A curve stitching has 12 points on each arm. Ka-yan stitches in order from point 1 on the upright arm and has done point 5 (point 5 included). How many threads are still to go?
Working:
Answer:
15.Ka-yee makes 3 curve-stitching patterns on a card, each with 5 points on each arm. How many threads are there altogether?
Working:
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16.A curve stitching has 6 points on each arm. Ming stitches in order from point 1 on the upright arm and has done point 2 (point 2 included). How many threads are still to go?
Working:
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17.May makes 2 curve-stitching patterns on a card, each with 6 points on each arm. How many threads are there altogether?
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18.Tsz-hin does curve stitching with 9 points on each arm, each point getting a thread. Tsz-hin stitches 3 threads a minute. How many minutes does it take?
Working:
Answer:
Show the answers and working
Curve stitching worksheet: Answers and working
Part A: Working out and filling in
1. 6 threads
Count the points on one arm. Each thread joins one point on each arm.
Each arm has 6 points and each thread joins one point on each arm: 6 threads.
2. 12 threads
Each thread uses one point on the upright arm. However many points it has, that is how many threads.
Each thread uses one point on each arm, and each arm has 12 points: 12 threads.
3. 10 threads
Each thread uses one point on the upright arm. However many points it has, that is how many threads.
Each thread uses one point on each arm, and each arm has 10 points: 10 threads.
4. 9 threads
Each thread uses one point on the upright arm. However many points it has, that is how many threads.
Each thread uses one point on each arm, and each arm has 9 points: 9 threads.
5. 7 threads
Each thread uses one point on the upright arm. However many points it has, that is how many threads.
Each thread uses one point on each arm, and each arm has 7 points: 7 threads.
6. 8 threads
Each thread uses one point on the upright arm. However many points it has, that is how many threads.
Each thread uses one point on each arm, and each arm has 8 points: 8 threads.
7. 2 threads
Count the points on one arm: that is how many threads there are in all. Then count those drawn.
6 in all, 4 drawn: 2 more.
8. 2
Look at the threads already drawn: what do the two numbers at each end add up to?
The two numbers add up to 6 + 1: point 5 joins point 2.
9. 8
Look at the threads already drawn: what do the two numbers at each end add up to?
The two numbers add up to 11 + 1: point 4 joins point 8.
10. 2
Look at the threads already drawn: what do the two numbers at each end add up to?
The two numbers add up to 9 + 1: point 8 joins point 2.
11. 4
Look at the threads already drawn: what do the two numbers at each end add up to?
The two numbers add up to 12 + 1: point 9 joins point 4.
12. 1
Look at the threads already drawn: what do the two numbers at each end add up to?
The two numbers add up to 11 + 1: point 11 joins point 1.
Part B: Word problems
Marking: 2 for the working, 1 for the answer, 1 for the sentence.
13. 5 minutes
First work out how many threads there are in all: each arm has 20 points.
20 threads: 20 ÷ 4 = 5 minutes.
14. 7 threads
How many threads are there in all? Going from point 1 to point 5, how many are done?
5 are done: 12 − 5 = 7 to go.
15. 15 threads
How many threads does one pattern need, with 5 points an arm? There are 3 patterns.
5 threads a pattern: 5 × 3 = 15.
16. 4 threads
How many threads are there in all? Going from point 1 to point 2, how many are done?
2 are done: 6 − 2 = 4 to go.
17. 12 threads
How many threads does one pattern need, with 6 points an arm? There are 2 patterns.
6 threads a pattern: 6 × 2 = 12.
18. 3 minutes
First work out how many threads there are in all: each arm has 9 points.
9 threads: 9 ÷ 3 = 3 minutes.
Numsprite · numsprite.com/en/worksheets/parallel-lines-quadrilaterals-and-triangles/curve-stitching
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