Fractions, Decimals, Percentages

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Presentation transcript:

Fractions, Decimals, Percentages Converting from one to another.

Menu fraction to decimal decimal to percentage fraction to percentage percentage to decimal percentage to fraction decimal to fraction

Change fraction to decimal Simple! Divide the top number (numerator) by the bottom number (denominator) For example: ¾ = 3 ÷ 4 = 0.75

Change decimal to percentage Even easier!! Multiply by 100 For example: 0.75 = 0.75 x 100 = 75%

Change fraction to percentage Divide top by bottom Multiply by 100 For example: 3/10 =3 ÷ 10 = 0.3 0.3 x 100 = 30%

Change percentage to decimal Divide by 100 For example: 85% = 85 ÷ 100 = 0.85

Change percentage to fraction Write the percentage as a fraction over 100 Cancel down if possible For example: 28% = 28/100 = 14/50

Change decimal to fraction Write as a fraction over 10, 100 or 1000 Then cancel down if possible For example: 0.8 = 8/10 = 4/5 0.45 = 45 /100 = 9/20

© JR Else 2003