Bangladesh · Class 4 · Practice Sheet 9

1. 1.

   One item costs ৳ 7.47. Find the total cost of 8 items.

   Formula:Total Cost

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

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2. 2.

   Find the perimeter of a rectangle measuring 43 m by 21 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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3. 3.

   Find the area of a square with side length 25 cm.

   Formula:Area of a Square

   $A = s^2$

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4. 4.

   Calculate 16 × 10.

   Formula:Multiplication

   $p = a \times b$

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5. 5.

   Calculate 168 ÷ 8.

   Formula:Division

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

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6. 6.

   Find the perimeter of a rectangle measuring 41 m by 31 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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7. 7.

   An item costs ৳ 14.7 and you pay with ৳ 20. How much change do you get?

   Formula:Change Due

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

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8. 8.

   What is 7 × 9?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   Find the mean (average) of these numbers: 34, 98, 61, 84.

   Formula:Arithmetic Mean

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

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10. 10.

    What is 6 × 3?

    Formula:Multiplication (Times Tables)

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

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11. 11.

    An item costs ৳ 12.86 and you pay with ৳ 30. How much change do you get?

    Formula:Change Due

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

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12. 12.

    30 sweets are shared equally among 6 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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13. 13.

    Convert 9.98 kilometres into metres.

    Formula:Metric Length Conversion

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

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14. 14.

    Find 3/4 of 48.

    Formula:Fraction of a Quantity

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

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15. 15.

    A rectangle is 32 cm long and 22 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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16. 16.

    An item costs ৳ 23.46 and you pay with ৳ 30. How much change do you get?

    Formula:Change Due

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

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17. 17.

    Find the mean (average) of these numbers: 22, 56, 49, 70.

    Formula:Arithmetic Mean

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

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18. 18.

    Calculate 35 × 3.

    Formula:Multiplication

    $p = a \times b$

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19. 19.

    Convert 8.53 kilometres into metres.

    Formula:Metric Length Conversion

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

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20. 20.

    What is 6 × 7?

    Formula:Multiplication (Times Tables)

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

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