Colombia · Grado 3 · Practice Sheet 36

1. 1.

   How many tens are there in the number 53?

   Formula:Place Value

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

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2. 2.

   What is half of 42?

   Formula:Halving

   $h = n \div 2$

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3. 3.

   25 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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4. 4.

   Subtract 18 from 94.

   Formula:Subtraction

   $\text{difference} = a - b$

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5. 5.

   42 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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6. 6.

   You have $5 and $2. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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7. 7.

   Add 19 + 20 + 14.

   Formula:Addition of Three Numbers

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

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8. 8.

   Fill in the missing number: 4 + ___ = 10.

   Formula:Missing Addend

   $b = \text{total} - a$

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9. 9.

   Add 19 + 20 + 6.

   Formula:Addition of Three Numbers

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

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10. 10.

    What is double 8?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    Continue the pattern by counting in 5s: 15, 20, ___

    Formula:Skip Counting

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

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12. 12.

    20 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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13. 13.

    You have $3 and $4. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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14. 14.

    What is 3 × 2?

    Formula:Multiplication (Times Tables)

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

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15. 15.

    Fill in the missing number: 7 + ___ = 16.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    What is 10 × 8?

    Formula:Multiplication (Times Tables)

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

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17. 17.

    Subtract 16 from 42.

    Formula:Subtraction

    $\text{difference} = a - b$

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18. 18.

    What is 3 × 3?

    Formula:Multiplication (Times Tables)

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

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19. 19.

    There are 6 bags with 8 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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20. 20.

    Add 16 + 15 + 8.

    Formula:Addition of Three Numbers

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

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