Mexico · Grado 3 · Practice Sheet 25

1. 1.

   What is double 11?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   Add 32 and 60.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   What is half of 40?

   Formula:Halving

   $h = n \div 2$

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4. 4.

   There are 6 bags with 2 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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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.

   What is 10 × 9?

   Formula:Multiplication (Times Tables)

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

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7. 7.

   Add 8 + 7 + 8.

   Formula:Addition of Three Numbers

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

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8. 8.

   Add 38 and 59.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   Add 18 + 17 + 15.

   Formula:Addition of Three Numbers

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

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10. 10.

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

    Formula:Skip Counting

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

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11. 11.

    Add 17 + 10 + 19.

    Formula:Addition of Three Numbers

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

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12. 12.

    You have $8 and $4. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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13. 13.

    What is 8 × 8?

    Formula:Multiplication (Times Tables)

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

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14. 14.

    How many tens are there in the number 19?

    Formula:Place Value

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

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15. 15.

    Add 4 + 20 + 11.

    Formula:Addition of Three Numbers

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

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16. 16.

    You have $4 and $6. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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17. 17.

    What is double 17?

    Formula:Doubling

    $d = 2 \times n$

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18. 18.

    Subtract 6 from 37.

    Formula:Subtraction

    $\text{difference} = a - b$

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19. 19.

    18 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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20. 20.

    How many tens are there in the number 23?

    Formula:Place Value

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

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