Numbers and place value · Ages 7–8

Counting in 4s, 6s, 7s, 8s, 9s, 20s, 25s, 50s and more worksheet

Part of: Three- and four-digit numbers

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Numbers and place value · Ages 7–8

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Write each answer in the space. For word problems, show your working and write a sentence answer.

1.Count in 50s: 100, 150, , 250
Answer:
2.Count in 4s: 4, 8, , 16
Answer:
3.Count in 9s: 45, 54, , 72
Answer:
4.Count in 250s: 0, 250, , 750
Answer:
5.Count in 250s: 500, , , 1250
Fill in each blank
Answer:
6.Each small step on the number line is 50. What number is the arrow pointing to?
Answer:
7.Count back in 6s: 54, , , 36
Fill in each blank
Answer:
8.Count in 500s: 2500, 3000, , 4000
Answer:
9.Count back in 250s: 1000, 750,
Answer:
10.Counting in 4s, the 1st number you say is 4: 4, 8, 12, … What is the 20th number you say?
Answer:

13.A hall has 4 chairs to a row: after row 1 there are 4 chairs, after row 2 there are 2 lots of 4. After row 6, how many chairs are there?
Working:
Answer:
14.A storeroom has 3000 crates of water, and a lorry takes 500 crates each trip. After 2 trips, how many crates are left?
Working:
Answer:
15.A pack of copier paper has 100 sheets. Tsz-hin takes 9 packs. How many sheets is that?
Working:
Answer:
16.A week has 7 days. Chi-keung's summer holiday is 2 weeks long. How many days is that?
Working:
Answer:
17.On a running route there is a water stop every 1000 m, the 1st at 1000 m. The 2nd stop is at m and the 7th stop is at m.
Fill in each blank
Working:
Answer:
18.Tsz-hin has 8 $50 notes. How many dollars is that?
Working:
Answer:

Show the answers and working

Counting in 4s, 6s, 7s, 8s, 9s, 20s, 25s, 50s and more worksheet: Answers and working

1. 200
Each step adds 50. What is 50 more than 150?
50 more each time: 150 + 50 = 200.
2. 12
Each step adds 4. What is 4 more than 8?
4 more each time: 8 + 4 = 12.
3. 63
Each step adds 9. What is 9 more than 54?
9 more each time: 54 + 9 = 63.
4. 500
Each step adds 250. What is 250 more than 250?
250 more each time: 250 + 250 = 500.
5. 750, 1000
Start at 500 and add 250 each time; you should land exactly on 1250.
250 more each time: 500, 750, 1000, 1250.
6. 300
Start at 0 and add 50 for each small step, counting along to the arrow.
Count 50 a step from 0: the arrow is 6 steps along, at 300.
7. 48, 42
Start at 54 and take 6 each time; you should land exactly on 36.
6 less each time: 54, 48, 42, 36.
8. 3500
Each step adds 500. What is 500 more than 3000?
500 more each time: 3000 + 500 = 3500.
9. 500
Counting back in 250s takes 250 off each time. What is 250 less than 750?
250 less each time: 750 − 250 = 500.
10. 80
The 1st is 1 lot of 4, the 2nd 2 lots. How many lots of 4 is the 20th?
The 1st is 1 lot of 4, the 2nd 2 lots, the 3rd 3 lots… so the 20th is 20 lots of 4: 80.

11. B. 250
See how far apart two neighbours are: take 2250 from 2500.
Neighbours differ by 2500 − 2250 = 250, so it counts in 250s.
12. D. 250
See how far apart two neighbours are: take 500 from 750.
Neighbours differ by 750 − 500 = 250, so it counts in 250s.

Marking: 2 for the working, 1 for the answer, 1 for the sentence.

13. 24 chairs
Each row adds 4 chairs. Count in 4s, 6 times.
Each row adds 4: count in 4s, 6 times: 24 chairs.
14. 2000 crates
Each trip takes 500 crates. Start at 3000 and count back in 500s, 2 times.
Count back in 500s from 3000, 2 times: 2000.
15. 900 sheets
Each pack has 100 sheets and there are 9 packs. Count in 100s, 9 times.
Count in 100s, 9 times: 900.
16. 14 days
Each week is 7 days and there are 2 weeks. Count in 7s, 2 times.
Count in 7s, 2 times: 14 days.
17. 2000, 7000
The 1st stop is at 1000 m and each one after is 1000 m further. How many lots of 1000 is the 2nd?
Count in 1000s: the 2nd is 2000 and the 7th is 7000.
18. 400 dollars
Each note is $50 and there are 8. Count in 50s, 8 times.
Count in 50s, 8 times: $400.

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