Li - To find percentages of amounts

Example 1 

10% of 40  = 

 ¹/₁₀ of 40 =

40 ÷ 10 = 4 

Example 2 

30% of 40  = 

 ¹/₁₀ of 40 =

40 ÷ 10 = 4 

4x3 = 12

Example 3 

25% of 40 = 

1/4 of 40 = 4

40 ÷ 4 = 10

Example 4 

5% of 40  = 

 10% of 40 = 4

4 ÷ 2 = 2