Chile · Grado 3 · Practice Sheet 21

1. 1.

   What is half of 8?

   Formula:Halving

   $h = n \div 2$

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2. 2.

   18 sweets are shared equally among 6 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 42 from 85.

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   Add 14 + 8 + 14.

   Formula:Addition of Three Numbers

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

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5. 5.

   What is 9 × 8?

   Formula:Multiplication (Times Tables)

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

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6. 6.

   There are 3 bags with 6 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.

   Continue the pattern by counting in 3s: 3, 6, ___

   Formula:Skip Counting

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

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8. 8.

   Add 11 and 20.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   Continue the pattern by counting in 2s: 6, 8, ___

   Formula:Skip Counting

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

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10. 10.

    Add 50 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    Continue the pattern by counting in 10s: 20, 30, ___

    Formula:Skip Counting

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

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12. 12.

    Subtract 9 from 63.

    Formula:Subtraction

    $\text{difference} = a - b$

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13. 13.

    What is 5 × 4?

    Formula:Multiplication (Times Tables)

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

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14. 14.

    Add 13 + 7 + 7.

    Formula:Addition of Three Numbers

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

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15. 15.

    How many tens are there in the number 30?

    Formula:Place Value

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

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16. 16.

    24 sweets are shared equally among 6 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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17. 17.

    Subtract 17 from 63.

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

    What is half of 18?

    Formula:Halving

    $h = n \div 2$

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19. 19.

    Add 79 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    There are 6 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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