Taiwan · Grade 4 · Practice Sheet 31

1. 1.

   Find the perimeter of a rectangle measuring 30 m by 21 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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2. 2.

   What is 5 × 6?

   Formula:Multiplication (Times Tables)

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

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3. 3.

   6 sweets are shared equally among 2 children. How many does each child get?

   Formula:Division (Equal Sharing)

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

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4. 4.

   Find 2/3 of 27.

   Formula:Fraction of a Quantity

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

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5. 5.

   Calculate 37 × 9.

   Formula:Multiplication

   $p = a \times b$

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6. 6.

   Find the perimeter of a rectangle measuring 22 m by 35 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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7. 7.

   Calculate 41 × 4.

   Formula:Multiplication

   $p = a \times b$

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8. 8.

   What is 9 × 10?

   Formula:Multiplication (Times Tables)

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

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9. 9.

   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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10. 10.

    Convert 4.69 kilometres into metres.

    Formula:Metric Length Conversion

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

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11. 11.

    Find 1/4 of 44.

    Formula:Fraction of a Quantity

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

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12. 12.

    One item costs NT$ 16.49. Find the total cost of 9 items.

    Formula:Total Cost

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

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13. 13.

    Find the area of a square with side length 18 cm.

    Formula:Area of a Square

    $A = s^2$

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14. 14.

    Convert 6.92 kilometres into metres.

    Formula:Metric Length Conversion

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

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15. 15.

    Calculate 99 ÷ 9.

    Formula:Division

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

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16. 16.

    A rectangle is 26 cm long and 16 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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17. 17.

    Find the mean (average) of these numbers: 68, 27, 80, 26, 56, 29.

    Formula:Arithmetic Mean

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

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18. 18.

    Calculate 83 × 3.

    Formula:Multiplication

    $p = a \times b$

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19. 19.

    What is 5 × 6?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    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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