Colombia · Grado 3 · Practice Sheet 21

1. 1.

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

   Formula:Skip Counting

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

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2. 2.

   Subtract 53 from 71.

   Formula:Subtraction

   $\text{difference} = a - b$

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3. 3.

   What is double 13?

   Formula:Doubling

   $d = 2 \times n$

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4. 4.

   27 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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5. 5.

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

   Formula:Adding Money

   $\text{total} = a + b$

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6. 6.

   What is half of 42?

   Formula:Halving

   $h = n \div 2$

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7. 7.

   You have $4 and $5. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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8. 8.

   What is half of 48?

   Formula:Halving

   $h = n \div 2$

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9. 9.

   Subtract 18 from 98.

   Formula:Subtraction

   $\text{difference} = a - b$

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10. 10.

    What is half of 38?

    Formula:Halving

    $h = n \div 2$

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11. 11.

    There are 6 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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12. 12.

    What is half of 20?

    Formula:Halving

    $h = n \div 2$

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13. 13.

    12 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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14. 14.

    Add 44 and 35.

    Formula:Addition

    $\text{sum} = a + b$

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15. 15.

    What is half of 40?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    How many tens are there in the number 29?

    Formula:Place Value

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

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17. 17.

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

    Formula:Adding Money

    $\text{total} = a + b$

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18. 18.

    How many tens are there in the number 27?

    Formula:Place Value

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

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19. 19.

    You have $5 and $6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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20. 20.

    27 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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