Ecuador · Grado 3 · Practice Sheet 12

1. 1.

   Subtract 75 from 92.

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   How many tens are there in the number 91?

   Formula:Place Value

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

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3. 3.

   Add 10 + 19 + 14.

   Formula:Addition of Three Numbers

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

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4. 4.

   Fill in the missing number: 11 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   Add 11 + 14 + 12.

   Formula:Addition of Three Numbers

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

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6. 6.

   Add 31 and 12.

   Formula:Addition

   $\text{sum} = a + b$

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7. 7.

   Fill in the missing number: 3 + ___ = 9.

   Formula:Missing Addend

   $b = \text{total} - a$

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8. 8.

   Subtract 55 from 71.

   Formula:Subtraction

   $\text{difference} = a - b$

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9. 9.

   Fill in the missing number: 2 + ___ = 15.

   Formula:Missing Addend

   $b = \text{total} - a$

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10. 10.

    Subtract 59 from 84.

    Formula:Subtraction

    $\text{difference} = a - b$

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11. 11.

    Add 16 + 18 + 4.

    Formula:Addition of Three Numbers

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

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12. 12.

    15 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 $1 and $4. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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14. 14.

    Subtract 41 from 96.

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    What is 10 × 3?

    Formula:Multiplication (Times Tables)

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

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16. 16.

    Fill in the missing number: 13 + ___ = 19.

    Formula:Missing Addend

    $b = \text{total} - a$

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17. 17.

    What is half of 4?

    Formula:Halving

    $h = n \div 2$

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18. 18.

    Add 87 and 6.

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    54 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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20. 20.

    Subtract 29 from 59.

    Formula:Subtraction

    $\text{difference} = a - b$

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