Germany · Klasse 4 · Practice Sheet 42

1. 1.

   Find the area of a square with side length 22 cm.

   Formula:Area of a Square

   $A = s^2$

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2. 2.

   Find the mean (average) of these numbers: 33, 16, 61, 90, 96, 75.

   Formula:Arithmetic Mean

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

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3. 3.

   A rectangle is 29 cm long and 22 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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4. 4.

   Find the perimeter of a rectangle measuring 24 m by 7 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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5. 5.

   A rectangle is 29 cm long and 26 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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6. 6.

   Convert 6.98 kilometres into metres.

   Formula:Metric Length Conversion

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

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7. 7.

   Find 4/5 of 70.

   Formula:Fraction of a Quantity

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

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8. 8.

   An item costs €23.03 and you pay with €30. How much change do you get?

   Formula:Change Due

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

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9. 9.

   Find the area of a square with side length 16 cm.

   Formula:Area of a Square

   $A = s^2$

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10. 10.

    What is 5 × 9?

    Formula:Multiplication (Times Tables)

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

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11. 11.

    12 sweets are shared equally among 3 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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12. 12.

    Find the perimeter of a rectangle measuring 13 m by 20 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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13. 13.

    Find the mean (average) of these numbers: 44, 17, 79, 78.

    Formula:Arithmetic Mean

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

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14. 14.

    Calculate 77 × 4.

    Formula:Multiplication

    $p = a \times b$

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15. 15.

    Calculate 144 ÷ 9.

    Formula:Division

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

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16. 16.

    20 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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17. 17.

    Calculate 51 × 9.

    Formula:Multiplication

    $p = a \times b$

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18. 18.

    What is 3 × 4?

    Formula:Multiplication (Times Tables)

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

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19. 19.

    A rectangle is 40 cm long and 15 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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20. 20.

    What is 8 × 9?

    Formula:Multiplication (Times Tables)

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

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