Poland · Klasa 3 · Practice Sheet 23

1. 1.

   What is double 12?

   Formula:Doubling

   $d = 2 \times n$

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2. 2.

   Fill in the missing number: 14 + ___ = 16.

   Formula:Missing Addend

   $b = \text{total} - a$

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3. 3.

   Add 9 + 7 + 5.

   Formula:Addition of Three Numbers

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

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4. 4.

   Fill in the missing number: 14 + ___ = 24.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   What is 5 × 3?

   Formula:Multiplication (Times Tables)

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

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6. 6.

   There are 4 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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7. 7.

   Add 85 and 8.

   Formula:Addition

   $\text{sum} = a + b$

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8. 8.

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

   Formula:Skip Counting

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

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9. 9.

   How many tens are there in the number 83?

   Formula:Place Value

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

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10. 10.

    Subtract 11 from 62.

    Formula:Subtraction

    $\text{difference} = a - b$

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11. 11.

    Add 13 + 17 + 7.

    Formula:Addition of Three Numbers

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

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12. 12.

    There are 3 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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13. 13.

    What is double 20?

    Formula:Doubling

    $d = 2 \times n$

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14. 14.

    Add 4 + 20 + 20.

    Formula:Addition of Three Numbers

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

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15. 15.

    Subtract 23 from 38.

    Formula:Subtraction

    $\text{difference} = a - b$

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16. 16.

    Fill in the missing number: 9 + ___ = 13.

    Formula:Missing Addend

    $b = \text{total} - a$

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17. 17.

    Add 11 + 8 + 13.

    Formula:Addition of Three Numbers

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

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18. 18.

    Fill in the missing number: 6 + ___ = 16.

    Formula:Missing Addend

    $b = \text{total} - a$

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19. 19.

    What is 10 × 9?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Add 22 and 55.

    Formula:Addition

    $\text{sum} = a + b$

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