South Korea · Grade 5 · Practice Sheet 2

1. 1.

   Calculate 342 ÷ 9.

   Formula:Division

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

   View formula →
2. 2.

   Find the mean (average) of these numbers: 21, 63, 58, 87.

   Formula:Arithmetic Mean

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

   View formula →
3. 3.

   Convert 6.55 kilometres into metres.

   Formula:Metric Length Conversion

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

   View formula →
4. 4.

   What is 10% of 90?

   Formula:Percentage of a Quantity

   $\text{result} = \dfrac{p}{100} \times N$

   View formula →
5. 5.

   Calculate 75 ÷ 5.

   Formula:Division

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

   View formula →
6. 6.

   An item costs ₩2.78 and you pay with ₩20. How much change do you get?

   Formula:Change Due

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

   View formula →
7. 7.

   One item costs ₩3.82. Find the total cost of 8 items.

   Formula:Total Cost

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

   View formula →
8. 8.

   What is 40% of 240?

   Formula:Percentage of a Quantity

   $\text{result} = \dfrac{p}{100} \times N$

   View formula →
9. 9.

   Calculate 31 × 4.

   Formula:Multiplication

   $p = a \times b$

   View formula →
10. 10.

    A train moves at 43 km/h for 4.6 hours. How far does it travel?

    Formula:Distance from Speed & Time

    $d = v \times t$

    View formula →
11. 11.

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

    Formula:Perimeter of a Rectangle

    $P = 2(l + w)$

    View formula →
12. 12.

    Convert 6.19 kilometres into metres.

    Formula:Metric Length Conversion

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

    View formula →
13. 13.

    Calculate 82 × 6.

    Formula:Multiplication

    $p = a \times b$

    View formula →
14. 14.

    Calculate 261 ÷ 9.

    Formula:Division

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

    View formula →
15. 15.

    A triangle has a base of 18 cm and a height of 27 cm. Find its area.

    Formula:Area of a Triangle

    $A = \tfrac{1}{2} b h$

    View formula →
16. 16.

    Find the mean (average) of these numbers: 29, 76, 78, 75.

    Formula:Arithmetic Mean

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

    View formula →
17. 17.

    Find 3/8 of 104.

    Formula:Fraction of a Quantity

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

    View formula →
18. 18.

    A triangle has a base of 24 cm and a height of 20 cm. Find its area.

    Formula:Area of a Triangle

    $A = \tfrac{1}{2} b h$

    View formula →
19. 19.

    One item costs ₩8.25. Find the total cost of 20 items.

    Formula:Total Cost

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

    View formula →
20. 20.

    Calculate 55 × 4.

    Formula:Multiplication

    $p = a \times b$

    View formula →

© FormulaWon — formulawon.app · Answers & step-by-step working available on the solutions sheet.