Thailand · Grade 3 · Practice Sheet 39

1. 1.

   What is double 16?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   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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3. 3.

   Subtract 21 from 75.

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   6 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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5. 5.

   Fill in the missing number: 14 + ___ = 19.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   Add 19 + 5 + 12.

   Formula:Addition of Three Numbers

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

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7. 7.

   27 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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8. 8.

   Fill in the missing number: 4 + ___ = 14.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

   Add 11 + 11 + 17.

   Formula:Addition of Three Numbers

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

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10. 10.

    Add 25 and 47.

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    You have ฿6 and ฿3. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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12. 12.

    What is half of 40?

    Formula:Halving

    $h = n \div 2$

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13. 13.

    Add 7 + 7 + 2.

    Formula:Addition of Three Numbers

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

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14. 14.

    What is double 24?

    Formula:Doubling

    $d = 2 \times n$

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15. 15.

    What is 10 × 9?

    Formula:Multiplication (Times Tables)

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

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16. 16.

    Continue the pattern by counting in 5s: 20, 25, ___

    Formula:Skip Counting

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

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17. 17.

    Add 55 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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18. 18.

    36 sweets are shared equally among 4 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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19. 19.

    You have ฿1 and ฿1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    Add 51 and 39.

    Formula:Addition

    $\text{sum} = a + b$

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