Mexico · Grado 3 · Practice Sheet 38

1. 1.

   Subtract 84 from 91.

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   Fill in the missing number: 5 + ___ = 18.

   Formula:Missing Addend

   $b = \text{total} - a$

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3. 3.

   How many tens are there in the number 47?

   Formula:Place Value

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

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4. 4.

   You have $9 and $1. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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5. 5.

   Add 3 + 13 + 6.

   Formula:Addition of Three Numbers

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

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6. 6.

   Add 62 and 8.

   Formula:Addition

   $\text{sum} = a + b$

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7. 7.

   How many tens are there in the number 67?

   Formula:Place Value

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

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8. 8.

   Add 15 + 9 + 2.

   Formula:Addition of Three Numbers

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

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9. 9.

   You have $1 and $8. How much money do you have altogether?

   Formula:Adding Money

   $\text{total} = a + b$

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10. 10.

    12 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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11. 11.

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

    Formula:Skip Counting

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

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12. 12.

    Add 46 and 20.

    Formula:Addition

    $\text{sum} = a + b$

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13. 13.

    What is half of 24?

    Formula:Halving

    $h = n \div 2$

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14. 14.

    What is double 22?

    Formula:Doubling

    $d = 2 \times n$

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15. 15.

    What is half of 8?

    Formula:Halving

    $h = n \div 2$

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16. 16.

    There are 4 bags with 6 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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17. 17.

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

    Formula:Skip Counting

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

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18. 18.

    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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19. 19.

    Add 56 and 52.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    What is 4 × 10?

    Formula:Multiplication (Times Tables)

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

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