Russia · Grade 3 · Practice Sheet 39

1. 1.

   Subtract 12 from 38.

   Formula:Subtraction

   $\text{difference} = a - b$

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2. 2.

   What is 5 × 8?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   Continue the pattern by counting in 2s: 8, 10, ___

   Formula:Skip Counting

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

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4. 4.

   Add 79 and 36.

   Formula:Addition

   $\text{sum} = a + b$

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5. 5.

   What is double 21?

   Formula:Doubling

   $d = 2 \times n$

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6. 6.

   Subtract 31 from 52.

   Formula:Subtraction

   $\text{difference} = a - b$

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7. 7.

   Fill in the missing number: 8 + ___ = 23.

   Formula:Missing Addend

   $b = \text{total} - a$

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8. 8.

   What is double 22?

   Formula:Doubling

   $d = 2 \times n$

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9. 9.

   What is half of 34?

   Formula:Halving

   $h = n \div 2$

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10. 10.

    How many tens are there in the number 42?

    Formula:Place Value

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

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11. 11.

    There are 2 bags with 8 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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12. 12.

    Add 5 + 3 + 14.

    Formula:Addition of Three Numbers

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

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13. 13.

    How many tens are there in the number 62?

    Formula:Place Value

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

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14. 14.

    Add 62 and 55.

    Formula:Addition

    $\text{sum} = a + b$

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15. 15.

    Fill in the missing number: 3 + ___ = 7.

    Formula:Missing Addend

    $b = \text{total} - a$

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16. 16.

    What is double 9?

    Formula:Doubling

    $d = 2 \times n$

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17. 17.

    Fill in the missing number: 11 + ___ = 22.

    Formula:Missing Addend

    $b = \text{total} - a$

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18. 18.

    Add 58 and 23.

    Formula:Addition

    $\text{sum} = a + b$

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19. 19.

    How many tens are there in the number 58?

    Formula:Place Value

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

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20. 20.

    What is double 24?

    Formula:Doubling

    $d = 2 \times n$

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