Brazil · Ano 4 · Practice Sheet 13

1. 1.

   A rectangle is 35 cm long and 14 cm wide. Find its area.

   Formula:Area of a Rectangle

   $A = l \times w$

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2. 2.

   An item costs R$ 34.02 and you pay with R$ 50. How much change do you get?

   Formula:Change Due

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

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3. 3.

   What is 8 × 8?

   Formula:Multiplication (Times Tables)

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

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4. 4.

   One item costs R$ 17.22. Find the total cost of 18 items.

   Formula:Total Cost

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

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5. 5.

   Calculate 297 ÷ 9.

   Formula:Division

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

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6. 6.

   Convert 9.83 kilometres into metres.

   Formula:Metric Length Conversion

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

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7. 7.

   Find the perimeter of a rectangle measuring 13 m by 32 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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8. 8.

   Calculate 31 × 9.

   Formula:Multiplication

   $p = a \times b$

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9. 9.

   Convert 7.62 kilometres into metres.

   Formula:Metric Length Conversion

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

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10. 10.

    What is 5 × 9?

    Formula:Multiplication (Times Tables)

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

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11. 11.

    An item costs R$ 18.31 and you pay with R$ 30. How much change do you get?

    Formula:Change Due

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

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12. 12.

    Find the perimeter of a rectangle measuring 34 m by 15 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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13. 13.

    Find the area of a square with side length 24 cm.

    Formula:Area of a Square

    $A = s^2$

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14. 14.

    An item costs R$ 12.81 and you pay with R$ 30. How much change do you get?

    Formula:Change Due

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

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15. 15.

    Calculate 93 × 12.

    Formula:Multiplication

    $p = a \times b$

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16. 16.

    Find 2/3 of 27.

    Formula:Fraction of a Quantity

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

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17. 17.

    Find the area of a square with side length 25 cm.

    Formula:Area of a Square

    $A = s^2$

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18. 18.

    An item costs R$ 6.14 and you pay with R$ 10. How much change do you get?

    Formula:Change Due

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

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19. 19.

    What is 6 × 9?

    Formula:Multiplication (Times Tables)

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

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20. 20.

    Find the perimeter of a rectangle measuring 22 m by 11 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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