Practice Problems — Set 14

K.CC.A.1 · Count to 100 by ones and by tens

Print and write your answers in the blanks. Use the diagrams to explain your thinking.

Count together

1. Count from 1 to 20 aloud with a parent. 2. Draw 16 objects. Count them as you write the numeral. 3. Count from 10 to 48 by tens aloud.

_See printable PDF for diagram._

Written practice

1. Write the next numbers: 14, 15, ___, ___, ___ 2. Fill in: 10, 20, ___, 40, ___, 60 3. Write the numeral: twenty → ___ 4. Complete by ones: 16, 17, ___, 19 5. What comes after 24? ___ 6. What comes before 25? ___ 7. Write the next numbers: 47, 48, ___, ___, ___ 8. Write the next numbers: 48, 49, ___, ___, ___ 9. Write the next numbers: 49, 50, ___, ___, ___ 10. Fill in by tens: 50, 60, ___, 70, ___

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More written practice

1. Fill in by tens: 55, 65, ___, 85 2. Write every tenth number from 50 to 90. 3. Start at 47 and write the next six numbers. 4. Write numerals from 47 to 55 in order.

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Patterns and rules

1. What rule: 14, 15, 16, 17 → add ___ each time. 2. Counting by tens (10, 20, 30): what do we add each time? ___ 3. Circle the rule: (A) add 1 each time (B) add 10 each time — for 5, 6, 7, 8 4. Explain in one sentence: How is counting by tens different from counting by ones?

_See printable PDF for diagram._

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Parent tip: Touch each object once while saying one number. Writing numerals builds fluency.