Practicing with Two-Digit Numbers
Free lesson for 1st grade math
These are example exercises that help children learn two-digit numbers and place value with tens and ones in grade 1.
1. Fill in.
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a.
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b.
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c.
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d.
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2. Add a ten by drawing another ten-column. Subtract a ten by crossing out a ten-column.
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a. 43 + 10 = ______ |
b. 28 + 10 = ______ |
c. 56 − 10 = ______ |
3. Explain to your teacher how you add a ten to a number, or subtract a ten.
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a. 61 + 10 = ______ 61 − 10 = ______ |
b. 37 + 10 = ______ 37 − 10 = ______ |
c. 89 + 10 = ______ 89 − 10 = ______ |
4. Match the number to its name.
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5. Write each number as (tens) + (ones).
| a. 91 = _____ + _____ | b. 79 = _____ + _____ | c. 58 = _____ + _____ |
6. Add.
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a. 20 + 6 = _______ 80 + 2 = _______ |
b. 60 + 7 = _______ 10 + 1 = _______ |
c. 6 + 50 = _______ 5 + 30 = _______ |
7. Fill in.
I'm between 84 and
92. I don't have any ones. Who am I?
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