Mexico · Grado 4 · Practice Sheet 18

1. 1.

   A rectangle is 26 cm long and 28 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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2. 2.

   Find the perimeter of a rectangle measuring 24 m by 11 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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3. 3.

   Convert 7.92 kilometres into metres.

   Formula:Metric Length Conversion

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

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4. 4.

   An item costs $39.98 and you pay with $50. How much change do you get?

   Formula:Change Due

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

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5. 5.

   Calculate 252 ÷ 7.

   Formula:Division

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

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6. 6.

   12 sweets are shared equally among 3 children. How many does each child get?

   Formula:Division (Equal Sharing)

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

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7. 7.

   Find the mean (average) of these numbers: 48, 26, 85, 64, 67, 95.

   Formula:Arithmetic Mean

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

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8. 8.

   28 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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9. 9.

   Calculate 155 ÷ 5.

   Formula:Division

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

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10. 10.

    Calculate 26 × 12.

    Formula:Multiplication

    $p = a \times b$

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11. 11.

    A rectangle is 31 cm long and 29 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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12. 12.

    Find the area of a square with side length 17 cm.

    Formula:Area of a Square

    $A = s^2$

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13. 13.

    Find 2/5 of 60.

    Formula:Fraction of a Quantity

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

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14. 14.

    36 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.

    Find 3/4 of 76.

    Formula:Fraction of a Quantity

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

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16. 16.

    Calculate 79 × 8.

    Formula:Multiplication

    $p = a \times b$

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17. 17.

    Find the area of a square with side length 28 cm.

    Formula:Area of a Square

    $A = s^2$

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18. 18.

    A rectangle is 39 cm long and 24 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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19. 19.

    Calculate 55 × 3.

    Formula:Multiplication

    $p = a \times b$

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20. 20.

    Find the perimeter of a rectangle measuring 41 m by 14 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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