United States · Grade 3 · Practice Sheet 9

1. 1.

   Subtract 28 from 51.

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   How many tens are there in the number 44?

   Formula:Place Value

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

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3. 3.

   Add 2 + 8 + 5.

   Formula:Addition of Three Numbers

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

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4. 4.

   Add 49 and 18.

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   What is half of 28?

   Formula:Halving

   $h = n \div 2$

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6. 6.

   Add 6 + 15 + 13.

   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.

   What is double 22?

   Formula:Doubling

   $d = 2 \times n$

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9. 9.

   There are 6 bags with 5 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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10. 10.

    Add 14 + 5 + 2.

    Formula:Addition of Three Numbers

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

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11. 11.

    What is 9 × 8?

    Formula:Multiplication (Times Tables)

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

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12. 12.

    Add 19 + 4 + 17.

    Formula:Addition of Three Numbers

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

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13. 13.

    Fill in the missing number: 10 + ___ = 12.

    Formula:Missing Addend

    $b = \text{total} - a$

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14. 14.

    Add 11 + 7 + 8.

    Formula:Addition of Three Numbers

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

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15. 15.

    There are 2 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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16. 16.

    What is half of 30?

    Formula:Halving

    $h = n \div 2$

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17. 17.

    You have $9 and $3. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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18. 18.

    What is double 3?

    Formula:Doubling

    $d = 2 \times n$

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19. 19.

    Fill in the missing number: 13 + ___ = 26.

    Formula:Missing Addend

    $b = \text{total} - a$

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20. 20.

    What is double 11?

    Formula:Doubling

    $d = 2 \times n$

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