Thailand · Grade 3 · Practice Sheet 21

1. 1.

   There are 5 bags with 2 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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2. 2.

   30 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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3. 3.

   What is 4 × 8?

   Formula:Multiplication (Times Tables)

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

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4. 4.

   What is double 3?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   What is half of 22?

   Formula:Halving

   $h = n \div 2$

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6. 6.

   How many tens are there in the number 64?

   Formula:Place Value

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

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7. 7.

   Add 28 and 10.

   Formula:Addition

   $\text{sum} = a + b$

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8. 8.

   What is half of 42?

   Formula:Halving

   $h = n \div 2$

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9. 9.

   You have ฿4 and ฿5. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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10. 10.

    How many tens are there in the number 18?

    Formula:Place Value

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

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11. 11.

    What is half of 14?

    Formula:Halving

    $h = n \div 2$

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12. 12.

    What is 2 × 6?

    Formula:Multiplication (Times Tables)

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

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13. 13.

    Add 16 + 2 + 5.

    Formula:Addition of Three Numbers

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

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14. 14.

    There are 5 bags with 2 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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15. 15.

    What is half of 12?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    Fill in the missing number: 15 + ___ = 28.

    Formula:Missing Addend

    $b = \text{total} - a$

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17. 17.

    How many tens are there in the number 64?

    Formula:Place Value

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

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18. 18.

    Subtract 9 from 46.

    Formula:Subtraction

    $\text{difference} = a - b$

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19. 19.

    Add 2 + 6 + 8.

    Formula:Addition of Three Numbers

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

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20. 20.

    You have ฿8 and ฿4. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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