Russia · Grade 4 · Practice Sheet 42

1. 1.

   An item costs ₽9.3 and you pay with ₽10. How much change do you get?

   Formula:Change Due

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

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2. 2.

   What is 2 × 5?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   An item costs ₽5.48 and you pay with ₽10. How much change do you get?

   Formula:Change Due

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

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4. 4.

   Calculate 20 × 9.

   Formula:Multiplication

   $p = a \times b$

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5. 5.

   One item costs ₽19.19. Find the total cost of 18 items.

   Formula:Total Cost

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

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6. 6.

   Find the mean (average) of these numbers: 15, 39, 90, 60.

   Formula:Arithmetic Mean

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

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7. 7.

   An item costs ₽4.47 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.

   Calculate 24 ÷ 6.

   Formula:Division

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

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9. 9.

   What is 8 × 9?

   Formula:Multiplication (Times Tables)

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

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10. 10.

    Find the mean (average) of these numbers: 78, 67, 19, 47, 76.

    Formula:Arithmetic Mean

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

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11. 11.

    Find the area of a square with side length 3 cm.

    Formula:Area of a Square

    $A = s^2$

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12. 12.

    One item costs ₽10.32. Find the total cost of 20 items.

    Formula:Total Cost

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

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13. 13.

    Calculate 61 × 9.

    Formula:Multiplication

    $p = a \times b$

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14. 14.

    20 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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15. 15.

    Calculate 79 × 11.

    Formula:Multiplication

    $p = a \times b$

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16. 16.

    A rectangle is 20 cm long and 19 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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17. 17.

    Find the perimeter of a rectangle measuring 39 m by 33 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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18. 18.

    A rectangle is 34 cm long and 7 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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19. 19.

    Calculate 40 ÷ 8.

    Formula:Division

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

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20. 20.

    Find the mean (average) of these numbers: 20, 36, 11, 90, 47.

    Formula:Arithmetic Mean

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

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