Bangladesh · Class 4 · Practice Sheet 14

1. 1.

   An item costs ৳ 31.55 and you pay with ৳ 40. How much change do you get?

   Formula:Change Due

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

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2. 2.

   Find the perimeter of a rectangle measuring 5 m by 12 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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3. 3.

   An item costs ৳ 30.82 and you pay with ৳ 40. How much change do you get?

   Formula:Change Due

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

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4. 4.

   Find the perimeter of a rectangle measuring 16 m by 5 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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5. 5.

   One item costs ৳ 13.21. Find the total cost of 10 items.

   Formula:Total Cost

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

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6. 6.

   Find the mean (average) of these numbers: 42, 99, 57, 40, 84.

   Formula:Arithmetic Mean

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

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7. 7.

   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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8. 8.

   What is 9 × 5?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   An item costs ৳ 7.95 and you pay with ৳ 20. How much change do you get?

   Formula:Change Due

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

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10. 10.

    Find the mean (average) of these numbers: 52, 10, 24, 40.

    Formula:Arithmetic Mean

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

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11. 11.

    Find the area of a square with side length 15 cm.

    Formula:Area of a Square

    $A = s^2$

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12. 12.

    An item costs ৳ 42.94 and you pay with ৳ 60. How much change do you get?

    Formula:Change Due

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

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13. 13.

    Calculate 23 × 10.

    Formula:Multiplication

    $p = a \times b$

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14. 14.

    Find the perimeter of a rectangle measuring 6 m by 18 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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15. 15.

    A rectangle is 29 cm long and 28 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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16. 16.

    Find the mean (average) of these numbers: 23, 47, 65, 31, 84, 20.

    Formula:Arithmetic Mean

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

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17. 17.

    Calculate 94 × 6.

    Formula:Multiplication

    $p = a \times b$

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18. 18.

    An item costs ৳ 13.07 and you pay with ৳ 30. How much change do you get?

    Formula:Change Due

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

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19. 19.

    What is 5 × 3?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Find the mean (average) of these numbers: 14, 64, 85, 95, 82, 68.

    Formula:Arithmetic Mean

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

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