Hong Kong · Grade 3 · Practice Sheet 28

1. 1.

   Fill in the missing number: 3 + ___ = 7.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   Add 19 + 17 + 3.

   Formula:Addition of Three Numbers

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

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3. 3.

   Continue the pattern by counting in 5s: 10, 15, ___

   Formula:Skip Counting

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

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4. 4.

   You have HK$ 4 and HK$ 3. 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 71?

   Formula:Place Value

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

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6. 6.

   Add 8 + 6 + 17.

   Formula:Addition of Three Numbers

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

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7. 7.

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

   Formula:Skip Counting

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

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8. 8.

   How many tens are there in the number 48?

   Formula:Place Value

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

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9. 9.

   Add 17 + 6 + 17.

   Formula:Addition of Three Numbers

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

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10. 10.

    What is double 16?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    Subtract 26 from 41.

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

    How many tens are there in the number 23?

    Formula:Place Value

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

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13. 13.

    Continue the pattern by counting in 10s: 40, 50, ___

    Formula:Skip Counting

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

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14. 14.

    Subtract 5 from 41.

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    Fill in the missing number: 13 + ___ = 20.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    Add 18 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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17. 17.

    What is half of 20?

    Formula:Halving

    $h = n \div 2$

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18. 18.

    Continue the pattern by counting in 5s: 10, 15, ___

    Formula:Skip Counting

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

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19. 19.

    9 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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20. 20.

    Continue the pattern by counting in 3s: 12, 15, ___

    Formula:Skip Counting

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

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