Question 1 What is 1 10 10 1 as a percent? Answer 1 Convert it into a decimal: 1 10 = 0.1 10 1 =0.1 Then, change the decimal to a percentage by multiplying by 100: 0.1 × 100 = 10 % 0.1×100=10% Question 2 If the ratio is 3:1, what is the percentage? Answer 1 A ratio of 3:1 can be written as 3 1 1 3 . In percentage terms: ( 3 1 ) × 100 = 300 % ( 1 3 )×100=300% Question 3 How can you change a repeating decimal 0.25 into a percent? Answer 1 Repeating decimal 𝑥 = 0.252525... x=0.252525... Multiply both sides by 100 to move the repeating part: 100 𝑥 = 25.252525... 100x=25.252525... Subtract 𝑥 = 0.252525... x=0.252525... from 100 𝑥 = 25.252525... 100x=25.252525...: 99 𝑥 = 25 99x=25 Solve for 𝑥 x: 𝑥 = 25 99 ≈ 25.25 % x= 99 25 ≈25.25% Question 4 How would you convert a repeating decimal like 1.27 or 0.6 into a fraction? Answer 1 For repeating decimals, express the repeating digits using a bar notation or write them as a fraction: 1.27 = 1. 27 ‾ = 127 99 1.27=1. 27 = 99 127 0.6 = 0. 6 ‾ = 2 3 0.6=0. 6 = 3 2 Question 5 What’s a terminating decimal? Answer 1 A terminating decimal is a decimal that ends after a finite number of digits, such as 2.3, 4.71, or 8.950. Terminating decimals have no infinitely repeating parts, unlike non-terminating decimals like 3.333...