Nigeria · Grade 1 · Practice Sheet 25

1. 1.

   Fill in the missing number: 4 + ___ = 10.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   What is double 21?

   Formula:Doubling

   $d = 2 \times n$

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3. 3.

   Fill in the missing number: 6 + ___ = 13.

   Formula:Missing Addend

   $b = \text{total} - a$

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4. 4.

   What is double 7?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   What is 10 − 7?

   Formula:Subtraction

   $\text{difference} = a - b$

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6. 6.

   Fill in the missing number: 9 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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7. 7.

   Continue the pattern by counting in 2s: 0, 2, ___

   Formula:Skip Counting

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

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8. 8.

   Fill in the missing number: 13 + ___ = 26.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

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

   Formula:Skip Counting

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

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10. 10.

    What is 6 + 2?

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    Fill in the missing number: 11 + ___ = 14.

    Formula:Missing Addend

    $b = \text{total} - a$

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12. 12.

    What is double 7?

    Formula:Doubling

    $d = 2 \times n$

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13. 13.

    What is 17 − 9?

    Formula:Subtraction

    $\text{difference} = a - b$

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14. 14.

    Continue the pattern by counting in 3s: 9, 12, ___

    Formula:Skip Counting

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

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15. 15.

    Fill in the missing number: 12 + ___ = 25.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    What is double 10?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    What is 2 + 8?

    Formula:Addition

    $\text{sum} = a + b$

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18. 18.

    You have ₦4 and ₦9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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19. 19.

    Add 15 and 35.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

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

    Formula:Skip Counting

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

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