Chile · Grado 4 · Practice Sheet 48

1. 1.

   Find the mean (average) of these numbers: 97, 72, 50, 29, 26.

   Formula:Arithmetic Mean

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

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2. 2.

   Calculate 80 ÷ 4.

   Formula:Division

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

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3. 3.

   Calculate 41 × 10.

   Formula:Multiplication

   $p = a \times b$

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4. 4.

   What is 3 × 8?

   Formula:Multiplication (Times Tables)

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

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5. 5.

   Calculate 70 × 11.

   Formula:Multiplication

   $p = a \times b$

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6. 6.

   Calculate 100 ÷ 5.

   Formula:Division

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

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7. 7.

   A rectangle is 17 cm long and 19 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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8. 8.

   Calculate 48 × 9.

   Formula:Multiplication

   $p = a \times b$

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9. 9.

   Find the area of a square with side length 11 cm.

   Formula:Area of a Square

   $A = s^2$

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10. 10.

    Find the perimeter of a rectangle measuring 35 m by 31 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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11. 11.

    Calculate 36 ÷ 6.

    Formula:Division

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

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12. 12.

    Find 2/4 of 24.

    Formula:Fraction of a Quantity

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

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13. 13.

    Calculate 41 × 5.

    Formula:Multiplication

    $p = a \times b$

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14. 14.

    A rectangle is 6 cm long and 30 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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15. 15.

    32 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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16. 16.

    One item costs $3.12. Find the total cost of 10 items.

    Formula:Total Cost

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

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17. 17.

    A rectangle is 36 cm long and 24 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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18. 18.

    12 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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19. 19.

    Convert 11.69 kilometres into metres.

    Formula:Metric Length Conversion

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

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20. 20.

    A rectangle is 24 cm long and 8 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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