Cambodia · Grade 5 · Practice Sheet 30

1. 1.

   Convert 6.98 kilometres into metres.

   Formula:Metric Length Conversion

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

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2. 2.

   What is 50% of 450?

   Formula:Percentage of a Quantity

   $\text{result} = \dfrac{p}{100} \times N$

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3. 3.

   Calculate 18 × 4.

   Formula:Multiplication

   $p = a \times b$

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4. 4.

   Find the perimeter of a rectangle measuring 17 m by 9 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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5. 5.

   Find the mean (average) of these numbers: 71, 75, 27, 80, 32, 30.

   Formula:Arithmetic Mean

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

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6. 6.

   Calculate 68 × 3.

   Formula:Multiplication

   $p = a \times b$

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7. 7.

   Find the area of a square with side length 14 cm.

   Formula:Area of a Square

   $A = s^2$

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8. 8.

   A rectangle is 11 cm long and 22 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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9. 9.

   Find the perimeter of a rectangle measuring 36 m by 16 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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10. 10.

    A car travels 448 km in 8 hours. Find its average speed.

    Formula:Speed

    $v = \dfrac{d}{t}$

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11. 11.

    One item costs ៛ 6.2. Find the total cost of 18 items.

    Formula:Total Cost

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

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12. 12.

    Find the perimeter of a rectangle measuring 44 m by 9 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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13. 13.

    Find 2/3 of 33.

    Formula:Fraction of a Quantity

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

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14. 14.

    Calculate 144 ÷ 4.

    Formula:Division

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

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15. 15.

    What is 15% of 590?

    Formula:Percentage of a Quantity

    $\text{result} = \dfrac{p}{100} \times N$

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16. 16.

    A train moves at 31 km/h for 4.1 hours. How far does it travel?

    Formula:Distance from Speed & Time

    $d = v \times t$

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17. 17.

    Calculate 420 ÷ 12.

    Formula:Division

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

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18. 18.

    Calculate 12 × 11.

    Formula:Multiplication

    $p = a \times b$

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19. 19.

    Find the mean (average) of these numbers: 27, 65, 72, 26.

    Formula:Arithmetic Mean

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

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20. 20.

    What is 12% of 470?

    Formula:Percentage of a Quantity

    $\text{result} = \dfrac{p}{100} \times N$

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