Cambodia · Grade 5 · Practice Sheet 29

1. 1.

   A rectangle is 18 cm long and 21 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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2. 2.

   Calculate 21 × 4.

   Formula:Multiplication

   $p = a \times b$

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3. 3.

   A triangle has a base of 25 cm and a height of 29 cm. Find its area.

   Formula:Area of a Triangle

   $A = \tfrac{1}{2} b h$

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4. 4.

   Calculate 48 ÷ 6.

   Formula:Division

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

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5. 5.

   A triangle has a base of 30 cm and a height of 15 cm. Find its area.

   Formula:Area of a Triangle

   $A = \tfrac{1}{2} b h$

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6. 6.

   Find the perimeter of a rectangle measuring 21 m by 21 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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7. 7.

   A triangle has a base of 18 cm and a height of 23 cm. Find its area.

   Formula:Area of a Triangle

   $A = \tfrac{1}{2} b h$

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8. 8.

   A train moves at 78 km/h for 5.1 hours. How far does it travel?

   Formula:Distance from Speed & Time

   $d = v \times t$

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9. 9.

   Calculate 63 × 4.

   Formula:Multiplication

   $p = a \times b$

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10. 10.

    An item costs ៛ 4.2 and you pay with ៛ 20. How much change do you get?

    Formula:Change Due

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

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11. 11.

    Calculate 39 × 8.

    Formula:Multiplication

    $p = a \times b$

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12. 12.

    Calculate 232 ÷ 8.

    Formula:Division

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

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13. 13.

    A train moves at 70 km/h for 2.6 hours. How far does it travel?

    Formula:Distance from Speed & Time

    $d = v \times t$

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14. 14.

    Calculate 16 × 11.

    Formula:Multiplication

    $p = a \times b$

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15. 15.

    Find the mean (average) of these numbers: 33, 76, 96, 99.

    Formula:Arithmetic Mean

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

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16. 16.

    A train moves at 98 km/h for 4 hours. How far does it travel?

    Formula:Distance from Speed & Time

    $d = v \times t$

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17. 17.

    Calculate 21 × 3.

    Formula:Multiplication

    $p = a \times b$

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18. 18.

    Calculate 45 ÷ 3.

    Formula:Division

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

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19. 19.

    A triangle has a base of 31 cm and a height of 24 cm. Find its area.

    Formula:Area of a Triangle

    $A = \tfrac{1}{2} b h$

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20. 20.

    A car travels 360 km in 8 hours. Find its average speed.

    Formula:Speed

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

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