Hong Kong · Grade 5 · Practice Sheet 37

1. 1.

   Calculate 72 × 11.

   Formula:Multiplication

   $p = a \times b$

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2. 2.

   What is 15% of 490?

   Formula:Percentage of a Quantity

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

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3. 3.

   Calculate 20 × 4.

   Formula:Multiplication

   $p = a \times b$

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4. 4.

   Calculate 168 ÷ 7.

   Formula:Division

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

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5. 5.

   Calculate 88 × 3.

   Formula:Multiplication

   $p = a \times b$

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6. 6.

   Find the mean (average) of these numbers: 27, 46, 67, 96, 35, 57.

   Formula:Arithmetic Mean

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

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7. 7.

   Calculate 108 ÷ 12.

   Formula:Division

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

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8. 8.

   Calculate 40 × 5.

   Formula:Multiplication

   $p = a \times b$

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9. 9.

   A car travels 486 km in 6 hours. Find its average speed.

   Formula:Speed

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

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10. 10.

    A train moves at 100 km/h for 2.6 hours. How far does it travel?

    Formula:Distance from Speed & Time

    $d = v \times t$

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11. 11.

    Convert 2.37 kilometres into metres.

    Formula:Metric Length Conversion

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

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12. 12.

    A car travels 400 km in 5 hours. Find its average speed.

    Formula:Speed

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

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13. 13.

    Find the perimeter of a rectangle measuring 11 m by 5 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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14. 14.

    A train moves at 82 km/h for 4.9 hours. How far does it travel?

    Formula:Distance from Speed & Time

    $d = v \times t$

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15. 15.

    Calculate 153 ÷ 9.

    Formula:Division

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

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16. 16.

    An item costs HK$ 2.11 and you pay with HK$ 20. How much change do you get?

    Formula:Change Due

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

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17. 17.

    Calculate 92 ÷ 4.

    Formula:Division

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

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18. 18.

    Find 7/8 of 80.

    Formula:Fraction of a Quantity

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

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19. 19.

    An item costs HK$ 8.78 and you pay with HK$ 10. How much change do you get?

    Formula:Change Due

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

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20. 20.

    What is 30% of 310?

    Formula:Percentage of a Quantity

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

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