Taiwan · Grade 4 · Practice Sheet 45

1. 1.

   Calculate 84 ÷ 12.

   Formula:Division

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

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2. 2.

   A rectangle is 7 cm long and 12 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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3. 3.

   An item costs NT$ 3.24 and you pay with NT$ 10. How much change do you get?

   Formula:Change Due

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

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4. 4.

   Find 1/2 of 8.

   Formula:Fraction of a Quantity

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

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5. 5.

   48 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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6. 6.

   Find the perimeter of a rectangle measuring 10 m by 27 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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7. 7.

   Calculate 77 × 10.

   Formula:Multiplication

   $p = a \times b$

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8. 8.

   What is 3 × 8?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   Find the mean (average) of these numbers: 94, 92, 93, 29.

   Formula:Arithmetic Mean

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

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10. 10.

    Find the area of a square with side length 16 cm.

    Formula:Area of a Square

    $A = s^2$

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11. 11.

    Calculate 132 ÷ 12.

    Formula:Division

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

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12. 12.

    Find the area of a square with side length 14 cm.

    Formula:Area of a Square

    $A = s^2$

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13. 13.

    15 sweets are shared equally among 5 children. How many does each child get?

    Formula:Division (Equal Sharing)

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

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14. 14.

    What is 7 × 7?

    Formula:Multiplication (Times Tables)

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

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15. 15.

    Calculate 341 ÷ 11.

    Formula:Division

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

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16. 16.

    What is 10 × 8?

    Formula:Multiplication (Times Tables)

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

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17. 17.

    One item costs NT$ 12.05. Find the total cost of 3 items.

    Formula:Total Cost

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

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18. 18.

    Convert 4.28 kilometres into metres.

    Formula:Metric Length Conversion

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

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19. 19.

    One item costs NT$ 17.46. Find the total cost of 8 items.

    Formula:Total Cost

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

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20. 20.

    Calculate 64 ÷ 8.

    Formula:Division

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

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