Japan · Grade 1 · Practice Sheet 43

1. 1.

   What is double 5?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   Add 55 and 14.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   Continue the pattern by counting in 2s: 8, 10, ___

   Formula:Skip Counting

   $\text{next} = \text{term} + \text{step}$

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4. 4.

   Fill in the missing number: 8 + ___ = 23.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   What is 1 + 5?

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   Add 29 and 6.

   Formula:Addition

   $\text{sum} = a + b$

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7. 7.

   What is 12 − 2?

   Formula:Subtraction

   $\text{difference} = a - b$

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8. 8.

   Continue the pattern by counting in 10s: 40, 50, ___

   Formula:Skip Counting

   $\text{next} = \text{term} + \text{step}$

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9. 9.

   What is 1 + 8?

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    Add 28 and 7.

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    What is 6 − 1?

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    Continue the pattern by counting in 3s: 6, 9, ___

    Formula:Skip Counting

    $\text{next} = \text{term} + \text{step}$

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13. 13.

    What is 1 + 9?

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    Add 31 and 34.

    Formula:Addition

    $\text{sum} = a + b$

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15. 15.

    Fill in the missing number: 11 + ___ = 16.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    What is 14 − 11?

    Formula:Subtraction

    $\text{difference} = a - b$

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17. 17.

    Fill in the missing number: 2 + ___ = 8.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    What is 6 − 3?

    Formula:Subtraction

    $\text{difference} = a - b$

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19. 19.

    Fill in the missing number: 10 + ___ = 23.

    Formula:Missing Addend

    $b = \text{total} - a$

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20. 20.

    Add 44 and 10.

    Formula:Addition

    $\text{sum} = a + b$

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