Brazil · Ano 1 · Practice Sheet 34

1. 1.

   What is 17 − 12?

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   What is 7 + 7?

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   Add 21 and 9.

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   What is 7 − 6?

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   What is double 25?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   What is 1 + 3?

   Formula:Addition

   $\text{sum} = a + b$

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7. 7.

   Add 85 and 51.

   Formula:Addition

   $\text{sum} = a + b$

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8. 8.

   Fill in the missing number: 13 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

   What is double 3?

   Formula:Doubling

   $d = 2 \times n$

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10. 10.

    What is 8 + 5?

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    What is double 4?

    Formula:Doubling

    $d = 2 \times n$

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12. 12.

    Add 12 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    What is double 6?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

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

    Formula:Adding Money

    $\text{total} = a + b$

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15. 15.

    What is 7 + 8?

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    What is double 14?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    You have R$ 7 and R$ 5. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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18. 18.

    Fill in the missing number: 13 + ___ = 18.

    Formula:Missing Addend

    $b = \text{total} - a$

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19. 19.

    What is 7 + 1?

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Fill in the missing number: 8 + ___ = 15.

    Formula:Missing Addend

    $b = \text{total} - a$

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