Bangladesh · Class 4 · Practice Sheet 27

1. 1.

   Find the mean (average) of these numbers: 82, 52, 73, 71.

   Formula:Arithmetic Mean

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

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2. 2.

   An item costs ৳ 17.98 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.

   What is 4 × 6?

   Formula:Multiplication (Times Tables)

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

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4. 4.

   Calculate 37 × 12.

   Formula:Multiplication

   $p = a \times b$

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5. 5.

   Find 1/3 of 18.

   Formula:Fraction of a Quantity

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

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6. 6.

   An item costs ৳ 10.31 and you pay with ৳ 30. How much change do you get?

   Formula:Change Due

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

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7. 7.

   Calculate 85 × 11.

   Formula:Multiplication

   $p = a \times b$

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8. 8.

   Calculate 77 ÷ 11.

   Formula:Division

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

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9. 9.

   16 sweets are shared equally among 4 children. How many does each child get?

   Formula:Division (Equal Sharing)

   $\text{each} = \text{total} \div \text{groups}$

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10. 10.

    Convert 8.09 kilometres into metres.

    Formula:Metric Length Conversion

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

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11. 11.

    Find the area of a square with side length 29 cm.

    Formula:Area of a Square

    $A = s^2$

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12. 12.

    Calculate 192 ÷ 6.

    Formula:Division

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

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13. 13.

    Find 6/8 of 96.

    Formula:Fraction of a Quantity

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

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14. 14.

    Calculate 55 × 8.

    Formula:Multiplication

    $p = a \times b$

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15. 15.

    Calculate 320 ÷ 8.

    Formula:Division

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

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16. 16.

    What is 6 × 3?

    Formula:Multiplication (Times Tables)

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

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17. 17.

    Find the mean (average) of these numbers: 43, 56, 38, 95, 52, 10.

    Formula:Arithmetic Mean

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

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18. 18.

    Find the area of a square with side length 10 cm.

    Formula:Area of a Square

    $A = s^2$

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19. 19.

    An item costs ৳ 31.85 and you pay with ৳ 40. How much change do you get?

    Formula:Change Due

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

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20. 20.

    What is 5 × 2?

    Formula:Multiplication (Times Tables)

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

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