Hong Kong · Grade 3 · Practice Sheet 45

1. 1.

   What is 2 × 5?

   Formula:Multiplication (Times Tables)

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

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2. 2.

   Fill in the missing number: 9 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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3. 3.

   Subtract 38 from 98.

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   Fill in the missing number: 10 + ___ = 20.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   You have HK$ 2 and HK$ 5. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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6. 6.

   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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7. 7.

   Fill in the missing number: 11 + ___ = 15.

   Formula:Missing Addend

   $b = \text{total} - a$

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8. 8.

   What is half of 34?

   Formula:Halving

   $h = n \div 2$

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9. 9.

   How many tens are there in the number 59?

   Formula:Place Value

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

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10. 10.

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

    Formula:Skip Counting

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

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11. 11.

    How many tens are there in the number 81?

    Formula:Place Value

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

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12. 12.

    Add 18 + 14 + 8.

    Formula:Addition of Three Numbers

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

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13. 13.

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

    Formula:Skip Counting

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

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14. 14.

    Add 40 and 58.

    Formula:Addition

    $\text{sum} = a + b$

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15. 15.

    Subtract 55 from 73.

    Formula:Subtraction

    $\text{difference} = a - b$

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16. 16.

    You have HK$ 7 and HK$ 5. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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17. 17.

    Subtract 84 from 98.

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

    Add 69 and 37.

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    Add 18 + 2 + 9.

    Formula:Addition of Three Numbers

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

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20. 20.

    Fill in the missing number: 13 + ___ = 15.

    Formula:Missing Addend

    $b = \text{total} - a$

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