Colombia · Grado 3 · Practice Sheet 39

1. 1.

   Fill in the missing number: 2 + ___ = 14.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   Add 4 + 4 + 18.

   Formula:Addition of Three Numbers

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

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3. 3.

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

   Formula:Skip Counting

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

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4. 4.

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

   Formula:Adding Money

   $\text{total} = a + b$

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5. 5.

   Add 19 + 12 + 7.

   Formula:Addition of Three Numbers

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

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6. 6.

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

   Formula:Skip Counting

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

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7. 7.

   32 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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8. 8.

   Fill in the missing number: 13 + ___ = 25.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

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

   Formula:Skip Counting

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

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10. 10.

    Fill in the missing number: 11 + ___ = 24.

    Formula:Missing Addend

    $b = \text{total} - a$

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11. 11.

    What is 3 × 7?

    Formula:Multiplication (Times Tables)

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

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12. 12.

    Add 34 and 21.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    You have $8 and $9. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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14. 14.

    What is half of 16?

    Formula:Halving

    $h = n \div 2$

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15. 15.

    Add 61 and 24.

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    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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17. 17.

    Fill in the missing number: 3 + ___ = 7.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    Subtract 17 from 31.

    Formula:Subtraction

    $\text{difference} = a - b$

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19. 19.

    Add 58 and 14.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Add 16 + 5 + 13.

    Formula:Addition of Three Numbers

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

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