Ireland · Year 4 · Practice Sheet 21

1. 1.

   Find the perimeter of a rectangle measuring 11 m by 17 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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2. 2.

   One item costs €10.22. Find the total cost of 13 items.

   Formula:Total Cost

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

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3. 3.

   Find the perimeter of a rectangle measuring 10 m by 6 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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4. 4.

   Calculate 130 ÷ 10.

   Formula:Division

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

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5. 5.

   A rectangle is 25 cm long and 24 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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6. 6.

   Calculate 24 × 3.

   Formula:Multiplication

   $p = a \times b$

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7. 7.

   Convert 10.4 kilometres into metres.

   Formula:Metric Length Conversion

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

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8. 8.

   A rectangle is 15 cm long and 25 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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9. 9.

   Find the mean (average) of these numbers: 43, 55, 42, 23, 62, 14.

   Formula:Arithmetic Mean

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

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10. 10.

    Calculate 204 ÷ 12.

    Formula:Division

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

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11. 11.

    One item costs €15.1. Find the total cost of 3 items.

    Formula:Total Cost

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

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12. 12.

    Find the perimeter of a rectangle measuring 20 m by 7 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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13. 13.

    A rectangle is 37 cm long and 14 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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14. 14.

    Calculate 14 × 11.

    Formula:Multiplication

    $p = a \times b$

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15. 15.

    Find the perimeter of a rectangle measuring 37 m by 33 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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16. 16.

    What is 2 × 2?

    Formula:Multiplication (Times Tables)

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

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17. 17.

    Calculate 70 ÷ 10.

    Formula:Division

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

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18. 18.

    A rectangle is 40 cm long and 10 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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19. 19.

    Find the area of a square with side length 8 cm.

    Formula:Area of a Square

    $A = s^2$

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20. 20.

    A rectangle is 11 cm long and 20 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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