Hong Kong · Grade 3 · Practice Sheet 30

1. 1.

   What is double 22?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   There are 6 bags with 5 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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3. 3.

   You have HK$ 9 and HK$ 7. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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4. 4.

   What is half of 50?

   Formula:Halving

   $h = n \div 2$

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5. 5.

   How many tens are there in the number 95?

   Formula:Place Value

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

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6. 6.

   Subtract 8 from 40.

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   Fill in the missing number: 11 + ___ = 19.

   Formula:Missing Addend

   $b = \text{total} - a$

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8. 8.

   Add 29 and 14.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

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

   Formula:Skip Counting

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

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10. 10.

    Add 20 + 17 + 2.

    Formula:Addition of Three Numbers

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

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11. 11.

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

    Formula:Skip Counting

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

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12. 12.

    Add 86 and 10.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    Continue the pattern by counting in 2s: 8, 10, ___

    Formula:Skip Counting

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

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14. 14.

    What is 4 × 5?

    Formula:Multiplication (Times Tables)

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

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15. 15.

    Continue the pattern by counting in 2s: 4, 6, ___

    Formula:Skip Counting

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

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16. 16.

    How many tens are there in the number 39?

    Formula:Place Value

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

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17. 17.

    You have HK$ 1 and HK$ 6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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18. 18.

    What is double 11?

    Formula:Doubling

    $d = 2 \times n$

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19. 19.

    What is 3 × 5?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    What is double 5?

    Formula:Doubling

    $d = 2 \times n$

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