Mexico · Grado 3 · Practice Sheet 39

1. 1.

   Fill in the missing number: 6 + ___ = 14.

   Formula:Missing Addend

   $b = \text{total} - a$

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2. 2.

   What is 9 × 6?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   Fill in the missing number: 10 + ___ = 18.

   Formula:Missing Addend

   $b = \text{total} - a$

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4. 4.

   What is 5 × 4?

   Formula:Multiplication (Times Tables)

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

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5. 5.

   What is double 15?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   Add 20 + 18 + 14.

   Formula:Addition of Three Numbers

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

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7. 7.

   What is double 18?

   Formula:Doubling

   $d = 2 \times n$

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8. 8.

   Add 37 and 57.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   What is 5 × 6?

   Formula:Multiplication (Times Tables)

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

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10. 10.

    Add 82 and 5.

    Formula:Addition

    $\text{sum} = a + b$

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11. 11.

    Continue the pattern by counting in 2s: 2, 4, ___

    Formula:Skip Counting

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

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12. 12.

    Add 5 + 17 + 13.

    Formula:Addition of Three Numbers

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

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13. 13.

    What is double 9?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

    Add 2 + 18 + 16.

    Formula:Addition of Three Numbers

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

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15. 15.

    Continue the pattern by counting in 10s: 20, 30, ___

    Formula:Skip Counting

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

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16. 16.

    Add 55 and 19.

    Formula:Addition

    $\text{sum} = a + b$

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17. 17.

    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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18. 18.

    Add 3 + 9 + 10.

    Formula:Addition of Three Numbers

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

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19. 19.

    Fill in the missing number: 6 + ___ = 15.

    Formula:Missing Addend

    $b = \text{total} - a$

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20. 20.

    How many tens are there in the number 98?

    Formula:Place Value

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

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