Hong Kong · Grade 3 · Practice Sheet 37

1. 1.

   What is double 14?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   What is half of 14?

   Formula:Halving

   $h = n \div 2$

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3. 3.

   Fill in the missing number: 4 + ___ = 13.

   Formula:Missing Addend

   $b = \text{total} - a$

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4. 4.

   27 sweets are shared equally among 3 children. How many does each child get?

   Formula:Division (Equal Sharing)

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

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5. 5.

   Subtract 9 from 41.

   Formula:Subtraction

   $\text{difference} = a - b$

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6. 6.

   Continue the pattern by counting in 10s: 20, 30, ___

   Formula:Skip Counting

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

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7. 7.

   What is half of 38?

   Formula:Halving

   $h = n \div 2$

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8. 8.

   There are 2 bags with 3 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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9. 9.

   How many tens are there in the number 52?

   Formula:Place Value

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

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10. 10.

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

    Formula:Skip Counting

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

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11. 11.

    Add 3 + 9 + 3.

    Formula:Addition of Three Numbers

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

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12. 12.

    You have HK$ 6 and HK$ 3. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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13. 13.

    What is 7 × 6?

    Formula:Multiplication (Times Tables)

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

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14. 14.

    Add 8 + 14 + 16.

    Formula:Addition of Three Numbers

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

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15. 15.

    How many tens are there in the number 89?

    Formula:Place Value

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

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16. 16.

    Subtract 16 from 86.

    Formula:Subtraction

    $\text{difference} = a - b$

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17. 17.

    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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18. 18.

    There are 2 bags with 3 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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19. 19.

    You have HK$ 8 and HK$ 6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    Add 7 + 2 + 8.

    Formula:Addition of Three Numbers

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

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