Chile · Grado 3 · Practice Sheet 13

1. 1.

   Fill in the missing number: 2 + ___ = 16.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   What is 10 × 4?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   There are 2 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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4. 4.

   Subtract 27 from 48.

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   Fill in the missing number: 3 + ___ = 18.

   Formula:Missing Addend

   $b = \text{total} - a$

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6. 6.

   What is double 22?

   Formula:Doubling

   $d = 2 \times n$

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7. 7.

   What is 5 × 9?

   Formula:Multiplication (Times Tables)

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

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8. 8.

   Add 30 and 32.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   What is half of 42?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    There are 3 bags with 7 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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11. 11.

    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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12. 12.

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

    Formula:Skip Counting

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

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13. 13.

    Fill in the missing number: 10 + ___ = 21.

    Formula:Missing Addend

    $b = \text{total} - a$

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14. 14.

    24 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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15. 15.

    What is double 3?

    Formula:Doubling

    $d = 2 \times n$

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16. 16.

    8 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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17. 17.

    You have $1 and $4. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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18. 18.

    There are 5 bags with 5 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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19. 19.

    You have $3 and $5. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    What is double 22?

    Formula:Doubling

    $d = 2 \times n$

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