Switzerland · Grade 3 · Practice Sheet 21

1. 1.

   Add 5 + 3 + 20.

   Formula:Addition of Three Numbers

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

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2. 2.

   Add 36 and 15.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   Add 11 + 16 + 14.

   Formula:Addition of Three Numbers

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

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4. 4.

   What is double 23?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   Add 32 and 36.

   Formula:Addition

   $\text{sum} = a + b$

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6. 6.

   There are 3 bags with 4 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.

   9 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.

   What is 9 × 7?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   Continue the pattern by counting in 5s: 10, 15, ___

   Formula:Skip Counting

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

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10. 10.

    You have CHF 4 and CHF 6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    Add 25 and 7.

    Formula:Addition

    $\text{sum} = a + b$

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12. 12.

    How many tens are there in the number 73?

    Formula:Place Value

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

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13. 13.

    Add 8 + 5 + 10.

    Formula:Addition of Three Numbers

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

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14. 14.

    What is double 18?

    Formula:Doubling

    $d = 2 \times n$

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15. 15.

    Subtract 14 from 52.

    Formula:Subtraction

    $\text{difference} = a - b$

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16. 16.

    Add 20 + 11 + 2.

    Formula:Addition of Three Numbers

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

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17. 17.

    There are 4 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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18. 18.

    Continue the pattern by counting in 3s: 6, 9, ___

    Formula:Skip Counting

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

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19. 19.

    Add 74 and 14.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Fill in the missing number: 6 + ___ = 21.

    Formula:Missing Addend

    $b = \text{total} - a$

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