Numbers and place value · Ages 6–7

Numbers to 100 worksheet

Covers: Numbers to 100, Place value to 1000, Comparing numbers, Counting in 2s, 3s, 5s and 10s, Estimating how many

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Numbers and place value · Ages 6–7

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Name:Date:Score:／48

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

1.Count on: 59, 60, , 62
Answer:
2.What number is the arrow pointing to on the number line?
Answer:
3.In 65, the 6 stands for ?
Answer:
4.The tens digit of 84 = ?
Answer:
5.The ones digit of 69 = ?
Answer:
6.Of 63 and 30, the bigger is and the smaller is .
Fill in each blank
Answer:
7.Counting in threes from 3: 3, 6, 9, … What is the 20th number you say?
Answer:

13.A pack holds 10 straws. Mum buys 5 packs and 2 more: straws in all, with in the tens place and in the ones.
Fill in each blank
Working:
Answer:
14.A box holds 10 pencils. Tsz-ching has 3 boxes and 3 more pencils. How many pencils does Tsz-ching have?
Working:
Answer:
15.Choose two of the digit cards 4, 8 and 7 to make a two-digit number. What is the largest number you can make?
Working:
Answer:
16.In a race May wears number 29 and Chi-keung wears number 34. How many numbers are there between theirs (not counting theirs)?
Working:
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17.A box holds 10 crayons. Tsz-hin has 10 boxes. How many crayons is that?
Working:
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18.Tsz-ching estimates a box has 38 marbles, then counts them and finds 37. How far off was Tsz-ching's estimate?
Working:
Answer:

Show the answers and working

Numbers to 100 worksheet: Answers and working

1. 61
Counting on adds 1 each time. Watch the ones: once they go past 9, the tens go up 1.
1 more each time; past 9 in the ones comes the next ten: after 60 comes 61.
2. 86
Find the nearest numbered mark to the arrow, then count the steps on or back to it.
Start at the nearest numbered mark and count steps on or back: 86.
3. In 65, the 6 stands for 60
In 65, the 6 is in the tens place, so it stands for 6 tens: 6 × 10 = 60
4. The tens digit of 84 = 8
84: from the ones, ones 4, tens 8, so the tens digit is 8
5. The ones digit of 69 = 9
69: from the ones, ones 9, so the ones digit is 9
6. 63, 30
Compare the tens of 63 and 30 first; only if they match, compare the ones.
Tens first, then the ones if the tens match: 63 is bigger, 30 smaller.
7. 60
The 1st is 3. How many lots of 3 is the 20th past the 1st?
The 1st is 3, and each after is 3 more. The 20th is 19 lots of 3 more than the 1st: 60.

8. B. 71
The first part of “seventy-one” tells you the tens and the last part the ones. The tens go on the left.
“seventy-one” is 7 tens and 1 ones: 7 in the tens place, 1 in the ones.
9. True
Compare the tens of 38 and 37, then the ones if needed. “>” says the left one is bigger.
Tens first, then the ones if the tens match; the open side of > faces the bigger number.
10. True
Counting in tens never changes the ones digit. Check whether 92 ends in 2.
Counting in tens never changes the ones: from 2, every number you say ends in 2.
11. B. 30
About 10 to a row. See roughly how many rows there are, then count in tens.
10 to a row and about 3 rows; counting in tens: about 30, so the answer is 30.
12. B. Ka-yan's estimate is too few
Count exactly how many there are first, then compare with Ka-yan's estimate of 59.
Counted one by one there are 60; then compare 59 with 60: tens first, then ones if the tens match.

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

13. 52, 5, 2
A pack of 10 is a ten, so 5 packs are 5 tens. The 2 extra straws are 2 ones.
5 packs are 5 tens, with 2 ones: 52, 5 in the tens and 2 in the ones.
14. 33 pencils
A box of 10 is a ten, so 3 boxes are 3 tens. The 3 extra are the ones.
3 boxes are 3 tens; with 3 ones that makes 33.
15. Choose two of the digit cards 4, 8 and 7 to make a two-digit number. What is the largest number you can make? (Answer: 87)
10 × 8 + 7 = 87
16. 4 numbers
Start counting at the number after 29 and stop at the number before 34.
From the number after 29 up to the one before 34: 4 numbers.
17. 100 crayons
Each box holds 10. Count in tens, 10 times.
Count in tens 10 times: 100.
18. 1 marble
How far off means the bigger minus the smaller. First see which of 38 and 37 is bigger.
The bigger minus the smaller: 38 and 37 are 1 apart.

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