Finland · Grade 4 · Practice Sheet 21

1. 1.

   Find the mean (average) of these numbers: 54, 21, 47, 70, 82, 10.

   Formula:Arithmetic Mean

   $\bar{x} = \dfrac{\sum x}{n}$

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2. 2.

   Calculate 96 × 10.

   Formula:Multiplication

   $p = a \times b$

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3. 3.

   What is 4 × 5?

   Formula:Multiplication (Times Tables)

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

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4. 4.

   A rectangle is 31 cm long and 6 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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5. 5.

   12 sweets are shared equally among 4 children. How many does each child get?

   Formula:Division (Equal Sharing)

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

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6. 6.

   What is 9 × 7?

   Formula:Multiplication (Times Tables)

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

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7. 7.

   Convert 11.58 kilometres into metres.

   Formula:Metric Length Conversion

   $1\,\text{km} = 1000\,\text{m}$

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8. 8.

   Calculate 360 ÷ 12.

   Formula:Division

   $q = \dfrac{a}{b}$

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9. 9.

   Find 2/3 of 57.

   Formula:Fraction of a Quantity

   $\text{result} = \dfrac{a}{b} \times N$

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10. 10.

    8 sweets are shared equally among 2 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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11. 11.

    Find 1/4 of 36.

    Formula:Fraction of a Quantity

    $\text{result} = \dfrac{a}{b} \times N$

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12. 12.

    Find the area of a square with side length 3 cm.

    Formula:Area of a Square

    $A = s^2$

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13. 13.

    Calculate 182 ÷ 7.

    Formula:Division

    $q = \dfrac{a}{b}$

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14. 14.

    What is 7 × 8?

    Formula:Multiplication (Times Tables)

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

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15. 15.

    4 sweets are shared equally among 2 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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16. 16.

    Find 3/4 of 24.

    Formula:Fraction of a Quantity

    $\text{result} = \dfrac{a}{b} \times N$

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17. 17.

    Calculate 153 ÷ 9.

    Formula:Division

    $q = \dfrac{a}{b}$

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18. 18.

    Convert 7.97 kilometres into metres.

    Formula:Metric Length Conversion

    $1\,\text{km} = 1000\,\text{m}$

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19. 19.

    A rectangle is 9 cm long and 4 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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20. 20.

    An item costs €25.6 and you pay with €30. How much change do you get?

    Formula:Change Due

    $\text{change} = \text{paid} - \text{cost}$

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