South Korea · Grade 3 · Practice Sheet 21

1. 1.

   16 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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2. 2.

   What is 2 × 6?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   Add 64 and 42.

   Formula:Addition

   $\text{sum} = a + b$

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4. 4.

   Subtract 40 from 80.

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   What is double 23?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   What is half of 14?

   Formula:Halving

   $h = n \div 2$

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7. 7.

   45 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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8. 8.

   How many tens are there in the number 79?

   Formula:Place Value

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

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9. 9.

   10 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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10. 10.

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

    Formula:Skip Counting

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

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11. 11.

    Subtract 22 from 72.

    Formula:Subtraction

    $\text{difference} = a - b$

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12. 12.

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

    Formula:Skip Counting

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

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13. 13.

    What is 9 × 9?

    Formula:Multiplication (Times Tables)

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

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14. 14.

    15 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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15. 15.

    Add 6 + 11 + 3.

    Formula:Addition of Three Numbers

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

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16. 16.

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

    Formula:Skip Counting

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

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17. 17.

    Subtract 13 from 45.

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

    Fill in the missing number: 5 + ___ = 11.

    Formula:Missing Addend

    $b = \text{total} - a$

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19. 19.

    What is 9 × 2?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Fill in the missing number: 14 + ___ = 17.

    Formula:Missing Addend

    $b = \text{total} - a$

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