Taiwan · Grade 3 · Practice Sheet 40

1. 1.

   What is 2 × 8?

   Formula:Multiplication (Times Tables)

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

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2. 2.

   Fill in the missing number: 7 + ___ = 20.

   Formula:Missing Addend

   $b = \text{total} - a$

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3. 3.

   What is double 25?

   Formula:Doubling

   $d = 2 \times n$

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4. 4.

   Fill in the missing number: 13 + ___ = 28.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   What is half of 16?

   Formula:Halving

   $h = n \div 2$

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6. 6.

   Add 15 + 10 + 7.

   Formula:Addition of Three Numbers

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

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7. 7.

   Continue the pattern by counting in 5s: 0, 5, ___

   Formula:Skip Counting

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

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8. 8.

   Add 74 and 47.

   Formula:Addition

   $\text{sum} = a + b$

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9. 9.

   Fill in the missing number: 4 + ___ = 18.

   Formula:Missing Addend

   $b = \text{total} - a$

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10. 10.

    What is 3 × 2?

    Formula:Multiplication (Times Tables)

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

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11. 11.

    What is double 16?

    Formula:Doubling

    $d = 2 \times n$

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12. 12.

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

    Formula:Skip Counting

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

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13. 13.

    Add 4 + 2 + 12.

    Formula:Addition of Three Numbers

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

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14. 14.

    Fill in the missing number: 10 + ___ = 24.

    Formula:Missing Addend

    $b = \text{total} - a$

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15. 15.

    How many tens are there in the number 15?

    Formula:Place Value

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

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16. 16.

    Add 10 + 16 + 4.

    Formula:Addition of Three Numbers

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

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17. 17.

    How many tens are there in the number 33?

    Formula:Place Value

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

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18. 18.

    What is 7 × 3?

    Formula:Multiplication (Times Tables)

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

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19. 19.

    Add 73 and 11.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Subtract 43 from 89.

    Formula:Subtraction

    $\text{difference} = a - b$

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