New Zealand · Year 4 · Practice Sheet 20

1. 1.

   An item costs $26.77 and you pay with $40. How much change do you get?

   Formula:Change Due

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

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2. 2.

   One item costs $23.67. Find the total cost of 3 items.

   Formula:Total Cost

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

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3. 3.

   Find 1/4 of 32.

   Formula:Fraction of a Quantity

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

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4. 4.

   Find the perimeter of a rectangle measuring 35 m by 12 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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5. 5.

   What is 9 × 2?

   Formula:Multiplication (Times Tables)

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

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6. 6.

   Find the perimeter of a rectangle measuring 36 m by 32 m.

   Formula:Perimeter of a Rectangle

   $P = 2(l + w)$

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7. 7.

   Calculate 27 × 9.

   Formula:Multiplication

   $p = a \times b$

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8. 8.

   One item costs $17.27. Find the total cost of 17 items.

   Formula:Total Cost

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

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9. 9.

   Calculate 91 × 9.

   Formula:Multiplication

   $p = a \times b$

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10. 10.

    Calculate 45 ÷ 9.

    Formula:Division

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

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11. 11.

    Find the mean (average) of these numbers: 14, 99, 26, 91, 51, 40.

    Formula:Arithmetic Mean

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

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12. 12.

    Calculate 104 ÷ 4.

    Formula:Division

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

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13. 13.

    A rectangle is 32 cm long and 11 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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14. 14.

    Calculate 330 ÷ 11.

    Formula:Division

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

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15. 15.

    A rectangle is 25 cm long and 28 cm wide. Find its area.

    Formula:Area of a Rectangle

    $A = l \times w$

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16. 16.

    30 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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17. 17.

    Calculate 48 × 11.

    Formula:Multiplication

    $p = a \times b$

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18. 18.

    Calculate 115 ÷ 5.

    Formula:Division

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

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19. 19.

    Find the mean (average) of these numbers: 35, 43, 39, 97, 20, 80.

    Formula:Arithmetic Mean

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

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20. 20.

    What is 3 × 7?

    Formula:Multiplication (Times Tables)

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

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