South Korea · Grade 4 · Practice Sheet 17

1. 1.

   Calculate 186 ÷ 6.

   Formula:Division

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

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2. 2.

   An item costs ₩37.73 and you pay with ₩50. How much change do you get?

   Formula:Change Due

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

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3. 3.

   Find 1/2 of 36.

   Formula:Fraction of a Quantity

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

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4. 4.

   What is 6 × 4?

   Formula:Multiplication (Times Tables)

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

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5. 5.

   Find the mean (average) of these numbers: 48, 94, 14, 58, 25, 59.

   Formula:Arithmetic Mean

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

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6. 6.

   6 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.

   One item costs ₩12.12. Find the total cost of 9 items.

   Formula:Total Cost

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

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8. 8.

   Calculate 99 ÷ 3.

   Formula:Division

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

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9. 9.

   An item costs ₩9.46 and you pay with ₩10. How much change do you get?

   Formula:Change Due

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

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10. 10.

    Find the area of a square with side length 4 cm.

    Formula:Area of a Square

    $A = s^2$

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11. 11.

    Calculate 44 ÷ 11.

    Formula:Division

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

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12. 12.

    Calculate 60 × 6.

    Formula:Multiplication

    $p = a \times b$

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13. 13.

    Calculate 156 ÷ 6.

    Formula:Division

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

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14. 14.

    Find the area of a square with side length 3 cm.

    Formula:Area of a Square

    $A = s^2$

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15. 15.

    One item costs ₩24.17. Find the total cost of 11 items.

    Formula:Total Cost

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

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16. 16.

    Find 2/8 of 144.

    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 12 cm.

    Formula:Area of a Square

    $A = s^2$

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18. 18.

    Find the perimeter of a rectangle measuring 27 m by 35 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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19. 19.

    Find the mean (average) of these numbers: 11, 14, 76, 56, 59, 30.

    Formula:Arithmetic Mean

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

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20. 20.

    Find the perimeter of a rectangle measuring 29 m by 15 m.

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

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