Vietnam · Grade 3 · Practice Sheet 6

1. 1.

   What is half of 10?

   Formula:Halving

   $h = n \div 2$

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2. 2.

   Add 15 and 41.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   Fill in the missing number: 12 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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4. 4.

   What is double 15?

   Formula:Doubling

   $d = 2 \times n$

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5. 5.

   Continue the pattern by counting in 10s: 0, 10, ___

   Formula:Skip Counting

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

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6. 6.

   There are 2 bags with 7 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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7. 7.

   What is half of 10?

   Formula:Halving

   $h = n \div 2$

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8. 8.

   What is 6 × 2?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   What is half of 28?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    What is double 21?

    Formula:Doubling

    $d = 2 \times n$

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11. 11.

    What is half of 40?

    Formula:Halving

    $h = n \div 2$

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12. 12.

    What is 8 × 5?

    Formula:Multiplication (Times Tables)

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

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13. 13.

    Add 54 and 49.

    Formula:Addition

    $\text{sum} = a + b$

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14. 14.

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

    Formula:Skip Counting

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

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15. 15.

    What is 2 × 6?

    Formula:Multiplication (Times Tables)

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

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16. 16.

    What is double 16?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    Fill in the missing number: 12 + ___ = 27.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    What is double 14?

    Formula:Doubling

    $d = 2 \times n$

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19. 19.

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

    Formula:Missing Addend

    $b = \text{total} - a$

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20. 20.

    How many tens are there in the number 93?

    Formula:Place Value

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

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