To change a fraction to a decimal number, 2 11 (‘top dog’ goes in the house…) divide divide to find the decimal equivalent ) …noticing a pattern? How can we show repeating decimals? = Fractions --> Decimals
To change a decimal to a fraction, Read it Write it Reduce it 0.84 “Eighty four hundredths” ÷ 4 = Read it Write it Reduce it “Two ÷ 5 = and five thousandths” Decimals --> Fractions
To change a fraction to a percent, 1. Check the denominator = = 35% = ÷ ÷ 372 = 72% 72% 3 7 * Can it be changed to 100? 2. Rewrite the fraction with a denominator of 100. can’t What if the denominator can’t be changed to 100? a. Divide =3 ÷ … b.Change to a percent * slide the decimal 2 to the right d. Round to the nearest tenth. 42.9% c. Slap a percent sign on it. % yes 3. Write it as a percent.
To change a percent to a fraction, 1.Re-write the percent as a fraction over = 2. Simplify. 8% ÷ % ÷ 25 Percents --> Fractions 11 4 = % ÷ 4 9_ 250 = 36_ 1000 = *If there’s a decimal, move it to the end. … but, what you do to the numerator.. … you also do to the denominator 0
DECIMAL …move the decimal 2 spaces to the right. Decimal Percents PERCENT From a to a 0.13=.13 13% = 0.9=.90= 90% = 0.27= 0.27% 0013= % = DECIMAL …move the decimal 2 spaces to the left. PERCENT From a to a 0.78 =78 78% = 0.05 = 5 5% = 1.75 = % = % =
Modeling Fractions, Decimals & Percents.