Fractions, Percentages, Decimals

Conversions, Multiplications, Divisions,

How do you find the percentage of an amount? 20% of 45?

Percentage Divided by 100 times amount. 20 ÷ 100 × 45 = 9

How do you convert a fraction to decimal? 3/5

Divide the numerator by the denominator. 3 ÷ 5 = 0.6

How do you find a fraction of an amount? 3/9 of 45

amount divided by denominator multiplied by the numerator. 45 ÷ 9 × 3 = 15

Fraction to percentage? 4/6

Numerator divided by denominator multiplied by 100. 4 ÷ 6 × 100 = 66.67

Percentage to decimal? 35%

Divide the percentage by 100. 35 ÷ 100 = 0.35

Decimal to percentage? 3.87

Multiply the decimal by 100. 3.87 × 100 = 387%

how to multiply fractions with same denominator? 3/7 × 6/7

Multiply the numerators together and keep the denominator. 3 × 6 / 7 = 18/7.

how to multiply fractions with different denominator? 4/9 × 6/3

Multiply the numerators together and the denominators together. 4 × 6 / 9 × 3 = 24/27.

How to divide fractions with same denominator? 4/6 divided by 9/6

keep the denominator and divide the numerators. 4 ÷ 9 / 6 = 4/9.

How to divide fractions with different denominator? 4/2 divided by 9/6

flip the second fraction upside down and times numerators together then denominators. 9/6=6/9. 4 ÷ 9/6 = 24/18.

decimal to fraction? 4.78

look at the placement of lowest number to find the decimal place, and place the number as the numerator and decimal place as denominator. 4.78 = 4.78/100