Japan · Grade 4 · Practice Sheet 27

1. 1.

   Find the mean (average) of these numbers: 46, 96, 81, 22, 11, 30.

   Formula:Arithmetic Mean

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

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2. 2.

   Calculate 49 ÷ 7.

   Formula:Division

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

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3. 3.

   What is 8 × 9?

   Formula:Multiplication (Times Tables)

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

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4. 4.

   Find the mean (average) of these numbers: 39, 11, 93, 81.

   Formula:Arithmetic Mean

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

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5. 5.

   Calculate 53 × 3.

   Formula:Multiplication

   $p = a \times b$

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6. 6.

   Calculate 160 ÷ 4.

   Formula:Division

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

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7. 7.

   Find the perimeter of a rectangle measuring 23 m by 23 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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8. 8.

   Calculate 196 ÷ 7.

   Formula:Division

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

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9. 9.

   12 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.

    Calculate 250 ÷ 10.

    Formula:Division

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

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11. 11.

    Calculate 28 × 5.

    Formula:Multiplication

    $p = a \times b$

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12. 12.

    Find 1/3 of 27.

    Formula:Fraction of a Quantity

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

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13. 13.

    What is 10 × 9?

    Formula:Multiplication (Times Tables)

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

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14. 14.

    8 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.

    A rectangle is 25 cm long and 16 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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16. 16.

    One item costs ¥20.38. Find the total cost of 15 items.

    Formula:Total Cost

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

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17. 17.

    Calculate 66 × 6.

    Formula:Multiplication

    $p = a \times b$

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18. 18.

    An item costs ¥7.58 and you pay with ¥20. How much change do you get?

    Formula:Change Due

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

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19. 19.

    What is 7 × 5?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Find the perimeter of a rectangle measuring 44 m by 35 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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