Mexico · Grado 3 · Practice Sheet 1

1. 1.

   Fill in the missing number: 2 + ___ = 14.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   There are 3 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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3. 3.

   How many tens are there in the number 95?

   Formula:Place Value

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

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4. 4.

   18 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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5. 5.

   How many tens are there in the number 19?

   Formula:Place Value

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

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6. 6.

   Subtract 16 from 68.

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

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

   Formula:Adding Money

   $\text{total} = a + b$

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8. 8.

   What is 10 × 3?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   Add 19 + 8 + 14.

   Formula:Addition of Three Numbers

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

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10. 10.

    8 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.

    Add 15 and 34.

    Formula:Addition

    $\text{sum} = a + b$

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12. 12.

    Subtract 20 from 69.

    Formula:Subtraction

    $\text{difference} = a - b$

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13. 13.

    What is double 7?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

    What is half of 16?

    Formula:Halving

    $h = n \div 2$

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15. 15.

    Subtract 32 from 51.

    Formula:Subtraction

    $\text{difference} = a - b$

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16. 16.

    What is half of 16?

    Formula:Halving

    $h = n \div 2$

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17. 17.

    Continue the pattern by counting in 3s: 12, 15, ___

    Formula:Skip Counting

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

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18. 18.

    What is double 15?

    Formula:Doubling

    $d = 2 \times n$

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19. 19.

    What is 6 × 4?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Fill in the missing number: 8 + ___ = 19.

    Formula:Missing Addend

    $b = \text{total} - a$

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