Brazil · Ano 2 · Practice Sheet 38

1. 1.

   Fill in the missing number: 8 + ___ = 12.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   What is double 23?

   Formula:Doubling

   $d = 2 \times n$

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3. 3.

   What is half of 22?

   Formula:Halving

   $h = n \div 2$

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4. 4.

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

   Formula:Adding Money

   $\text{total} = a + b$

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5. 5.

   How many tens are there in the number 18?

   Formula:Place Value

   $\text{value} = \text{tens} \times 10 + \text{ones}$

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6. 6.

   What is 7 − 2?

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   What is half of 40?

   Formula:Halving

   $h = n \div 2$

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8. 8.

   What is double 16?

   Formula:Doubling

   $d = 2 \times n$

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9. 9.

   What is 7 × 4?

   Formula:Multiplication (Times Tables)

   $\text{product} = a \times b$

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10. 10.

    What is double 14?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    Subtract 7 from 57.

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    What is 1 + 1?

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    Add 12 + 16 + 2.

    Formula:Addition of Three Numbers

    $\text{sum} = a + b + c$

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14. 14.

    Subtract 28 from 33.

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    What is 9 + 2?

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    Subtract 5 from 44.

    Formula:Subtraction

    $\text{difference} = a - b$

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17. 17.

    Fill in the missing number: 8 + ___ = 23.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    What is half of 4?

    Formula:Halving

    $h = n \div 2$

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19. 19.

    What is double 5?

    Formula:Doubling

    $d = 2 \times n$

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20. 20.

    Add 11 + 3 + 15.

    Formula:Addition of Three Numbers

    $\text{sum} = a + b + c$

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