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F ractions D ecimals and P ercents SOL 6.2 By Kathy Woodard. A ny N umber can be W ritten as a F raction D ecimal or P ercent. P ercent. H ow do we write a P ercent as a F raction ?. So, put it over 100 , And simplify the fraction!. Per 100 . 90%. =. 32%. = . 9%. =.
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Percent How do we write aPercent as aFraction? So, put it over 100, And simplify the fraction! Per 100 90% = 32% = 9% =
It’s a lot easier to simplify these fractions if you know all the factors of 100 by heart! 1 100 10 50 2 25 4 20 5
How do we write aPercent as aDecimal ? Percent 32% 90% = .32 = .9 9% = .09
or PercenttoDecimal 0
Percent 30% Decimal 0.30 = 0.3 Fraction
Percent 24% Decimal 0.24 Fraction
Percent 45% Decimal 0.45 Fraction
Percent 32% Decimal 0.32 Fraction
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Percent 50% Decimal 0.50 = 0.5 Fraction
Percent 66% Decimal 0.66 Fraction
Percent 80% Decimal 0.80 = 0.8 Fraction
0% 25% 50% 75% 100% 25% What percent does each progress bar show? 67% 88% 40% 75% 1/2 3/4 1/4 0 1
Estimate Each Percent: Progress bar website: infragistics.com
What Percent Full? http://www.superteacherworksheets.com/measurement/graduated-cylinders-10s.pdf
This rocks! http://illuminations.nctm.org/activitydetail.aspx?ID=11
Fractions, decimals & Percents little pieces By Kathy Woodard
How do we write aDecimal as aFraction? 0.26 0.05 0.8 0.125
0.6 0.03 0.45 0.375
What does Percent mean? Percentmeans Per Hundred tenths hundredths 0
How do we write aDecimalas aPercent ? Percent 0.75 = 75% 0.05 = 5% 0 0.2 = 20% Sometimes you have to round 0.125 = 12.5% ~ 13%
0.06 = 6% 0.25 = 25% = 50% 0.5 = 37.5% ~ 38% 0.375
0.7 = 70% 0.93 = 93% = 8% 0.08 = 12.5% ~ 13% 0.125
1 = 1.0 = 100% 1/2 = 0.5 = 50% 2/2 = 1.0 = 100% 1/4 0.25 = 25% 2/4 0.5 = 50% 3/4 0.75 = 75% 4/4 1.0 = 100% 1/5 0.2 = 20% 2/5 0.4 = 40% 3/5 0.6 = 60% 4/5 0.8 = 80% 5/5 1 = 100%
Also memorize the most important ones: 0 1/101/5 1/41/3 1/23/41 Rounds to 0.33 1 0 0.5 0.75 0.25 0.1 Rounds to 33% 0% 0.2 100% 50% 75% 25% 10% 20%
How do we change aFractionto aDecimal ? Rewrite it as an equivalent fraction with a denominator of 10 or 100
How do we change aFractionto aDecimal ? The line says divided by or… so 1 ÷ 2