Czechia · Grade 3 · Practice Sheet 31

1. 1.

   What is half of 10?

   Formula:Halving

   $h = n \div 2$

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2. 2.

   Add 70 and 8.

   Formula:Addition

   $\text{sum} = a + b$

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3. 3.

   Subtract 48 from 76.

   Formula:Subtraction

   $\text{difference} = a - b$

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4. 4.

   Fill in the missing number: 11 + ___ = 21.

   Formula:Missing Addend

   $b = \text{total} - a$

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5. 5.

   45 sweets are shared equally among 5 children. How many does each child get?

   Formula:Division (Equal Sharing)

   $\text{each} = \text{total} \div \text{groups}$

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6. 6.

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

   Formula:Skip Counting

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

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7. 7.

   What is half of 4?

   Formula:Halving

   $h = n \div 2$

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8. 8.

   Continue the pattern by counting in 10s: 40, 50, ___

   Formula:Skip Counting

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

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9. 9.

   Subtract 78 from 97.

   Formula:Subtraction

   $\text{difference} = a - b$

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10. 10.

    You have Kč 7 and Kč 1. How much money do you have altogether?

    Formula:Adding Money

    $\text{total} = a + b$

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11. 11.

    What is half of 22?

    Formula:Halving

    $h = n \div 2$

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12. 12.

    What is double 24?

    Formula:Doubling

    $d = 2 \times n$

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13. 13.

    Add 5 + 17 + 6.

    Formula:Addition of Three Numbers

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

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14. 14.

    Subtract 20 from 86.

    Formula:Subtraction

    $\text{difference} = a - b$

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15. 15.

    Add 37 and 6.

    Formula:Addition

    $\text{sum} = a + b$

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16. 16.

    Add 7 + 15 + 11.

    Formula:Addition of Three Numbers

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

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17. 17.

    How many tens are there in the number 45?

    Formula:Place Value

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

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18. 18.

    Add 12 + 6 + 12.

    Formula:Addition of Three Numbers

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

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19. 19.

    Add 52 and 54.

    Formula:Addition

    $\text{sum} = a + b$

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20. 20.

    Continue the pattern by counting in 10s: 30, 40, ___

    Formula:Skip Counting

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

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