Measures and time · Ages 7–8
Bigger unit, smaller number worksheet
Part of: Metres and centimetres
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Bigger unit, smaller number worksheet
Measures and time · Ages 7–8
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.A ribbon is 20 cm long. Measured with 2 cm clips it is clips long; measured with 10 cm rulers it is rulers long.
Fill in each blank
Answer:
2.A ribbon is 20 cm long. Measured with 5 cm clips it is clips long; measured with 10 cm rulers it is rulers long.
Fill in each blank
Answer:
3.A ribbon is 40 cm long. Measured with 2 cm clips it is clips long; measured with 10 cm rulers it is rulers long.
Fill in each blank
Answer:
Part B: Choose, or true or false (2 marks each)
4.A rope is 9 m long. Measuring it in metres and in centimetres, which gives the bigger number?
- A. The numbers are the same
- B. They can't be compared
- C. Centimetres give the bigger number
- D. Metres give the bigger number
Choose the right answer
Answer:
5.A 📎 is shorter than a 🖍️. Measuring the same table with 📎 and with 🖍️, the number is bigger with 🖍️.
True or false?
Answer:
6.A rope is 4 m long. Measuring it in metres and in centimetres, which gives the bigger number?
- A. The numbers are the same
- B. Metres give the bigger number
- C. They can't be compared
- D. Centimetres give the bigger number
Choose the right answer
Answer:
7.A 📎 is shorter than a 📏. Measuring the same table with 📎 and with 📏, the number is bigger with 📎.
True or false?
Answer:
8.A 🖍️ is shorter than a 📏. Measuring the same table with 🖍️ and with 📏, the number is bigger with 📏.
True or false?
Answer:
9.A rope is 7 m long. Measuring it in metres and in centimetres, which gives the bigger number?
- A. They can't be compared
- B. Centimetres give the bigger number
- C. The numbers are the same
- D. Metres give the bigger number
Choose the right answer
Answer:
10.6 m is longer than 560 cm.
True or false?
Answer:
11.8 m is longer than 820 cm.
True or false?
Answer:
12.5 m is longer than 460 cm.
True or false?
Answer:
Part C: Word problems (4 marks each)
13.Tsz-ching measures a curtain's length and gets 2; May measures the same curtain and gets 200. Both are right: one used metres, the other centimetres. Who used metres?
- A. Both used metres
- B. Tsz-ching
- C. You can't tell
- D. May
Choose the right answer
Working:
Answer:
14.Ka-yan's stride is 25 cm and Dad's is 50 cm. Ka-yan measures the living room in 16 strides. How many strides does Dad take for the same room?
Working:
Answer:
15.Ka-lok measures a storybook with paper clips: it is 10 clips long. A pencil is as long as 2 clips. How many pencils long is the book?
Working:
Answer:
16.Chi-keung measures a curtain's length and gets 4; Tsz-hin measures the same curtain and gets 400. Both are right: one used metres, the other centimetres. Who used metres?
- A. Both used metres
- B. You can't tell
- C. Tsz-hin
- D. Chi-keung
Choose the right answer
Working:
Answer:
17.Ka-yee's stride is 25 cm and Dad's is 50 cm. Ka-yee measures the living room in 16 strides. How many strides does Dad take for the same room?
Working:
Answer:
18.Ka-lok measures a storybook with paper clips: it is 10 clips long. A pencil is as long as 5 clips. How many pencils long is the book?
Working:
Answer:
Show the answers and working
Bigger unit, smaller number worksheet: Answers and working
Part A: Working out and filling in
1. 10, 2
With clips: how many lots of 2 are in 20? With rulers: how many lots of 10 are in 20?
The clips are short, so 10 of them; the rulers are long, so just 2: the same ribbon, the bigger the unit, the smaller the number.
2. 4, 2
With clips: how many lots of 5 are in 20? With rulers: how many lots of 10 are in 20?
The clips are short, so 4 of them; the rulers are long, so just 2: the same ribbon, the bigger the unit, the smaller the number.
3. 20, 4
With clips: how many lots of 2 are in 40? With rulers: how many lots of 10 are in 40?
The clips are short, so 20 of them; the rulers are long, so just 4: the same ribbon, the bigger the unit, the smaller the number.
Part B: Choose, or true or false
4. C. Centimetres give the bigger number
Which is longer, a metre or a centimetre? With the longer unit, do you need more goes or fewer?
A centimetre is shorter, so it takes many more goes: 9 m is 900 cm, and 900 is greater than 9.
5. False
The shorter the unit, the more goes it takes to measure the same table. Which is shorter, the 📎 or the 🖍️?
The shorter the unit, the more goes it takes and the bigger the number: the shorter 📎 gives the bigger number.
6. D. Centimetres give the bigger number
Which is longer, a metre or a centimetre? With the longer unit, do you need more goes or fewer?
A centimetre is shorter, so it takes many more goes: 4 m is 400 cm, and 400 is greater than 4.
7. True
The shorter the unit, the more goes it takes to measure the same table. Which is shorter, the 📎 or the 📏?
The shorter the unit, the more goes it takes and the bigger the number: the shorter 📎 gives the bigger number.
8. False
The shorter the unit, the more goes it takes to measure the same table. Which is shorter, the 🖍️ or the 📏?
The shorter the unit, the more goes it takes and the bigger the number: the shorter 🖍️ gives the bigger number.
9. B. Centimetres give the bigger number
Which is longer, a metre or a centimetre? With the longer unit, do you need more goes or fewer?
A centimetre is shorter, so it takes many more goes: 7 m is 700 cm, and 700 is greater than 7.
10. True
Don't just compare 6 and 560: change 6 m into centimetres first, then compare.
Change to the same unit first: 6 m = 600 cm; compare that with 560 cm. Don't just see that 6 is smaller than 560.
11. False
Don't just compare 8 and 820: change 8 m into centimetres first, then compare.
Change to the same unit first: 8 m = 800 cm; compare that with 820 cm. Don't just see that 8 is smaller than 820.
12. True
Don't just compare 5 and 460: change 5 m into centimetres first, then compare.
Change to the same unit first: 5 m = 500 cm; compare that with 460 cm. Don't just see that 5 is smaller than 460.
Part C: Word problems
Marking: 2 for the working, 1 for the answer, 1 for the sentence.
13. B. Tsz-ching
A metre is longer than a centimetre. On the same curtain, do metres give the bigger or the smaller number? Compare 2 and 200.
A metre is longer than a centimetre, so on the same curtain metres give the smaller number: 2 m = 200 cm.
14. 8 strides
How many of Ka-yan's strides make one of Dad's? With a bigger unit, does the count go up or down?
One of Dad's strides is two of Ka-yan's: a unit twice as big takes half as many, so 16 becomes 8.
15. 5 pencils
Every 2 clips make 1 pencil. How many lots of 2 are in 10?
Every 2 clips make 1 pencil: 10 clips are 5 pencils. A bigger unit, a smaller number.
16. D. Chi-keung
A metre is longer than a centimetre. On the same curtain, do metres give the bigger or the smaller number? Compare 4 and 400.
A metre is longer than a centimetre, so on the same curtain metres give the smaller number: 4 m = 400 cm.
17. 8 strides
How many of Ka-yee's strides make one of Dad's? With a bigger unit, does the count go up or down?
One of Dad's strides is two of Ka-yee's: a unit twice as big takes half as many, so 16 becomes 8.
18. 2 pencils
Every 5 clips make 1 pencil. How many lots of 5 are in 10?
Every 5 clips make 1 pencil: 10 clips are 2 pencils. A bigger unit, a smaller number.
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