Hong Kong · Grade 3 · Practice Sheet 23

1. 1.

   What is half of 24?

   Formula:Halving

   $h = n \div 2$

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2. 2.

   Subtract 27 from 91.

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   Fill in the missing number: 15 + ___ = 28.

   Formula:Missing Addend

   $b = \text{total} - a$

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4. 4.

   Add 54 and 56.

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   Add 7 + 20 + 14.

   Formula:Addition of Three Numbers

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

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6. 6.

   Continue the pattern by counting in 10s: 0, 10, ___

   Formula:Skip Counting

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

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7. 7.

   There are 6 bags with 4 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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8. 8.

   18 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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9. 9.

   How many tens are there in the number 56?

   Formula:Place Value

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

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10. 10.

    Add 19 + 2 + 6.

    Formula:Addition of Three Numbers

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

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11. 11.

    You have HK$ 2 and HK$ 1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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12. 12.

    Fill in the missing number: 11 + ___ = 14.

    Formula:Missing Addend

    $b = \text{total} - a$

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13. 13.

    24 sweets are shared equally among 6 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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14. 14.

    How many tens are there in the number 90?

    Formula:Place Value

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

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15. 15.

    Add 15 + 2 + 13.

    Formula:Addition of Three Numbers

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

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16. 16.

    How many tens are there in the number 22?

    Formula:Place Value

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

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17. 17.

    Continue the pattern by counting in 3s: 0, 3, ___

    Formula:Skip Counting

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

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18. 18.

    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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19. 19.

    Add 80 and 20.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Fill in the missing number: 14 + ___ = 27.

    Formula:Missing Addend

    $b = \text{total} - a$

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