Netherlands · Year 4 · Practice Sheet 49

1. 1.

   Find the mean (average) of these numbers: 37, 53, 16, 53, 43.

   Formula:Arithmetic Mean

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

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2. 2.

   An item costs €18.85 and you pay with €30. How much change do you get?

   Formula:Change Due

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

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3. 3.

   Find the mean (average) of these numbers: 86, 37, 48, 84, 96, 80.

   Formula:Arithmetic Mean

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

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4. 4.

   Find the area of a square with side length 4 cm.

   Formula:Area of a Square

   $A = s^2$

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5. 5.

   Find the mean (average) of these numbers: 54, 46, 45, 27, 88, 24.

   Formula:Arithmetic Mean

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

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6. 6.

   What is 6 × 2?

   Formula:Multiplication (Times Tables)

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

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7. 7.

   One item costs €16.55. Find the total cost of 7 items.

   Formula:Total Cost

   $\text{total} = \text{price} \times \text{quantity}$

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8. 8.

   Find the perimeter of a rectangle measuring 16 m by 20 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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9. 9.

   What is 4 × 9?

   Formula:Multiplication (Times Tables)

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

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10. 10.

    Convert 7.59 kilometres into metres.

    Formula:Metric Length Conversion

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

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11. 11.

    Find the mean (average) of these numbers: 25, 11, 62, 56.

    Formula:Arithmetic Mean

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

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12. 12.

    An item costs €42.75 and you pay with €60. How much change do you get?

    Formula:Change Due

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

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13. 13.

    Find the perimeter of a rectangle measuring 24 m by 19 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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14. 14.

    One item costs €13.55. Find the total cost of 4 items.

    Formula:Total Cost

    $\text{total} = \text{price} \times \text{quantity}$

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15. 15.

    Calculate 420 ÷ 12.

    Formula:Division

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

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16. 16.

    Find the area of a square with side length 23 cm.

    Formula:Area of a Square

    $A = s^2$

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17. 17.

    A rectangle is 9 cm long and 30 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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18. 18.

    Find the mean (average) of these numbers: 81, 37, 83, 29, 53.

    Formula:Arithmetic Mean

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

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19. 19.

    Calculate 39 × 11.

    Formula:Multiplication

    $p = a \times b$

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20. 20.

    What is 3 × 6?

    Formula:Multiplication (Times Tables)

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

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