Indonesia · Grade 1 · Practice Sheet 15

1. 1.

   What is double 2?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   Add 67 and 23.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   What is 9 − 5?

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   Add 56 and 37.

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   You have Rp 9 and Rp 9. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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6. 6.

   What is 11 − 4?

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   You have Rp 9 and Rp 8. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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8. 8.

   What is 9 + 7?

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   Fill in the missing number: 4 + ___ = 17.

   Formula:Missing Addend

   $b = \text{total} - a$

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10. 10.

    What is double 10?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    You have Rp 5 and Rp 6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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12. 12.

    Continue the pattern by counting in 10s: 10, 20, ___

    Formula:Skip Counting

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

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13. 13.

    Add 86 and 6.

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

    Fill in the missing number: 11 + ___ = 21.

    Formula:Missing Addend

    $b = \text{total} - a$

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15. 15.

    Continue the pattern by counting in 5s: 20, 25, ___

    Formula:Skip Counting

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

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16. 16.

    What is 13 − 7?

    Formula:Subtraction

    $\text{difference} = a - b$

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17. 17.

    What is double 14?

    Formula:Doubling

    $d = 2 \times n$

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18. 18.

    You have Rp 3 and Rp 9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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19. 19.

    What is double 17?

    Formula:Doubling

    $d = 2 \times n$

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20. 20.

    What is 6 + 1?

    Formula:Addition

    $\text{sum} = a + b$

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