Hong Kong · Grade 3 · Practice Sheet 42

1. 1.

   What is half of 18?

   Formula:Halving

   $h = n \div 2$

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2. 2.

   Subtract 36 from 69.

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   What is half of 38?

   Formula:Halving

   $h = n \div 2$

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4. 4.

   What is double 3?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   What is half of 12?

   Formula:Halving

   $h = n \div 2$

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6. 6.

   40 sweets are shared equally among 5 children. How many does each child get?

   Formula:Division (Equal Sharing)

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

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7. 7.

   What is double 3?

   Formula:Doubling

   $d = 2 \times n$

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8. 8.

   Add 15 + 17 + 18.

   Formula:Addition of Three Numbers

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

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9. 9.

   There are 4 bags with 8 apples in each bag. How many apples are there in total?

   Formula:Multiplication as Repeated Addition

   $\text{total} = \text{groups} \times \text{size}$

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10. 10.

    What is 7 × 2?

    Formula:Multiplication (Times Tables)

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

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11. 11.

    30 sweets are shared equally among 5 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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12. 12.

    What is half of 30?

    Formula:Halving

    $h = n \div 2$

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13. 13.

    35 sweets are shared equally among 5 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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14. 14.

    There are 4 bags with 6 apples in each bag. How many apples are there in total?

    Formula:Multiplication as Repeated Addition

    $\text{total} = \text{groups} \times \text{size}$

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15. 15.

    Add 28 and 48.

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    What is half of 48?

    Formula:Halving

    $h = n \div 2$

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17. 17.

    Add 7 + 8 + 8.

    Formula:Addition of Three Numbers

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

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18. 18.

    12 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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19. 19.

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

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    Subtract 13 from 99.

    Formula:Subtraction

    $\text{difference} = a - b$

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