Brazil · Ano 3 · Practice Sheet 39

1. 1.

   How many tens are there in the number 46?

   Formula:Place Value

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

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2. 2.

   Add 31 and 51.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   What is half of 42?

   Formula:Halving

   $h = n \div 2$

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4. 4.

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

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   What is double 19?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   Subtract 42 from 87.

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   Fill in the missing number: 2 + ___ = 7.

   Formula:Missing Addend

   $b = \text{total} - a$

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8. 8.

   Add 4 + 17 + 18.

   Formula:Addition of Three Numbers

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

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9. 9.

   Add 84 and 15.

   Formula:Addition

   $\text{sum} = a + b$

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10. 10.

    14 sweets are shared equally among 2 children. How many does each child get?

    Formula:Division (Equal Sharing)

    $\text{each} = \text{total} \div \text{groups}$

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11. 11.

    You have R$ 4 and R$ 1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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12. 12.

    Subtract 27 from 85.

    Formula:Subtraction

    $\text{difference} = a - b$

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13. 13.

    How many tens are there in the number 28?

    Formula:Place Value

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

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14. 14.

    Subtract 35 from 98.

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    Fill in the missing number: 14 + ___ = 23.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    What is half of 14?

    Formula:Halving

    $h = n \div 2$

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17. 17.

    Fill in the missing number: 7 + ___ = 20.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    What is half of 18?

    Formula:Halving

    $h = n \div 2$

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19. 19.

    Fill in the missing number: 12 + ___ = 27.

    Formula:Missing Addend

    $b = \text{total} - a$

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20. 20.

    What is 9 × 4?

    Formula:Multiplication (Times Tables)

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

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