South Korea · Grade 1 · Practice Sheet 44

1. 1.

   What is 6 + 6?

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   Add 39 and 46.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   What is 7 + 1?

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   What is double 6?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   Add 40 and 38.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   What is double 23?

   Formula:Doubling

   $d = 2 \times n$

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7. 7.

   You have ₩7 and ₩1. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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8. 8.

   Add 88 and 50.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   Fill in the missing number: 5 + ___ = 9.

   Formula:Missing Addend

   $b = \text{total} - a$

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10. 10.

    What is 7 + 9?

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    Continue the pattern by counting in 10s: 30, 40, ___

    Formula:Skip Counting

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

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12. 12.

    Add 58 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    What is 2 + 5?

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    What is 14 − 2?

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    Add 33 and 58.

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    Fill in the missing number: 10 + ___ = 14.

    Formula:Missing Addend

    $b = \text{total} - a$

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17. 17.

    You have ₩8 and ₩4. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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18. 18.

    What is 7 + 9?

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    Add 85 and 60.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    What is 6 − 3?

    Formula:Subtraction

    $\text{difference} = a - b$

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