Zambia · Grade 1 · Practice Sheet 21

1. 1.

   Add 66 and 47.

   Formula:Addition

   $\text{sum} = a + b$

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2. 2.

   Fill in the missing number: 3 + ___ = 8.

   Formula:Missing Addend

   $b = \text{total} - a$

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3. 3.

   What is double 25?

   Formula:Doubling

   $d = 2 \times n$

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4. 4.

   You have ZK 4 and ZK 6. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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5. 5.

   Add 66 and 25.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   What is 8 − 6?

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   Fill in the missing number: 8 + ___ = 11.

   Formula:Missing Addend

   $b = \text{total} - a$

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8. 8.

   What is 15 − 11?

   Formula:Subtraction

   $\text{difference} = a - b$

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9. 9.

   What is 9 + 9?

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    What is 11 − 5?

    Formula:Subtraction

    $\text{difference} = a - b$

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11. 11.

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

    Formula:Skip Counting

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

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12. 12.

    Fill in the missing number: 4 + ___ = 15.

    Formula:Missing Addend

    $b = \text{total} - a$

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13. 13.

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

    Formula:Adding Money

    $\text{total} = a + b$

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14. 14.

    What is double 3?

    Formula:Doubling

    $d = 2 \times n$

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15. 15.

    Add 88 and 44.

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    What is 10 − 3?

    Formula:Subtraction

    $\text{difference} = a - b$

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17. 17.

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

    Formula:Skip Counting

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

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18. 18.

    What is double 18?

    Formula:Doubling

    $d = 2 \times n$

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19. 19.

    Add 70 and 18.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Fill in the missing number: 15 + ___ = 29.

    Formula:Missing Addend

    $b = \text{total} - a$

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