1st Grade Place Value Worksheets

Free printable · with answer key

Grade 1 · 40 problems · two-digit tens and ones; build a two-digit number · includes answer key · CCSS.1.NBT.B.2

A two-digit number is tens and ones, not a pair of unrelated digits. Tens and ones asks the child to break 20 numbers from 10 to 99. 3 of them end in 0, so the ones place really is zero. Build the number runs the other way: the parts are given and the child writes the number. 57 is 5 tens and 7 ones. The usual miss is writing 75, with the digits swapped. Have them touch the tens first and say "5 tens, 7 ones." For a number that ends in 0, "no ones" is still a 0, not a blank line.

Tens and ones

Grade 1 · 20 problems · two-digit tens and ones · includes answer key · CCSS.1.NBT.B.2

Write the tens and the ones.

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1.
57 = ____ tens and ____ ones.
2.
95 = ____ tens and ____ ones.
3.
15 = ____ tens and ____ ones.
4.
77 = ____ tens and ____ ones.
5.
89 = ____ tens and ____ ones.
6.
26 = ____ tens and ____ ones.
7.
47 = ____ tens and ____ ones.
8.
36 = ____ tens and ____ ones.
9.
28 = ____ tens and ____ ones.
10.
50 = ____ tens and ____ ones.
11.
12 = ____ tens and ____ ones.
12.
62 = ____ tens and ____ ones.
13.
45 = ____ tens and ____ ones.
14.
80 = ____ tens and ____ ones.
15.
20 = ____ tens and ____ ones.
16.
81 = ____ tens and ____ ones.
17.
42 = ____ tens and ____ ones.
18.
93 = ____ tens and ____ ones.
19.
48 = ____ tens and ____ ones.
20.
98 = ____ tens and ____ ones.

Answer key

1. 5 tens, 7 ones
2. 9 tens, 5 ones
3. 1 tens, 5 ones
4. 7 tens, 7 ones
5. 8 tens, 9 ones
6. 2 tens, 6 ones
7. 4 tens, 7 ones
8. 3 tens, 6 ones
9. 2 tens, 8 ones
10. 5 tens, 0 ones
11. 1 tens, 2 ones
12. 6 tens, 2 ones
13. 4 tens, 5 ones
14. 8 tens, 0 ones
15. 2 tens, 0 ones
16. 8 tens, 1 ones
17. 4 tens, 2 ones
18. 9 tens, 3 ones
19. 4 tens, 8 ones
20. 9 tens, 8 ones

Build the number

Grade 1 · 20 problems · build a two-digit number · includes answer key · CCSS.1.NBT.B.2

Write the number.

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1.
2 tens and 1 ones. Write the number.
2.
7 tens and 8 ones. Write the number.
3.
8 tens and 3 ones. Write the number.
4.
6 tens and 8 ones. Write the number.
5.
4 tens and 5 ones. Write the number.
6.
2 tens and 7 ones. Write the number.
7.
2 tens and 6 ones. Write the number.
8.
4 tens and 4 ones. Write the number.
9.
1 tens and 5 ones. Write the number.
10.
9 tens and 0 ones. Write the number.
11.
1 tens and 8 ones. Write the number.
12.
3 tens and 2 ones. Write the number.
13.
2 tens and 0 ones. Write the number.
14.
9 tens and 4 ones. Write the number.
15.
6 tens and 2 ones. Write the number.
16.
5 tens and 2 ones. Write the number.
17.
8 tens and 0 ones. Write the number.
18.
4 tens and 8 ones. Write the number.
19.
6 tens and 5 ones. Write the number.
20.
5 tens and 4 ones. Write the number.

Answer key

1. 21
2. 78
3. 83
4. 68
5. 45
6. 27
7. 26
8. 44
9. 15
10. 90
11. 18
12. 32
13. 20
14. 94
15. 62
16. 52
17. 80
18. 48
19. 65
20. 54

Related sheets

These sheets belong to the math worksheet for first graders library.