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Fractions, Decimals and Percents TEST STUDY GUIDE*Convert Between Fractions, Decimals and PercentsFractions into DecimalsFirst, see if you can rewrite the denominator as a power of 10 (10 or 100). If you can, also use a pattern to rewrite the numerator. Then, move the decimal point however many zeros there are to the leftIf you cannot rewrite the denominator as 10 or 100See if you can simplify and then use patternsIf not, you will have to do numerator ÷ denominatorDecimals into FractionsLook at place value! Use this to write your fraction and make sure to simplifyDecimals into PercentsGoing from small to BIGMove decimal point 2 places rightPercents into DecimalsGoing from BIG to smallMove decimal point 2 places leftPercents into FractionsAll percents are out of 100The percent = the numerator & 100 = denominator. Make sure to simplifyFractions into PercentsFirst, see if you can rewrite the denominator as 100. Then, the numerator is the percentIf you cannot rewrite the denominator as 100You will have to divide to get a decimal. Then, change this decimal to a percentFilling in a chart/tableYou can decide which conversions you do first!*Word ProblemsRead for information that you know and don’t know. Decide what the question is asking and do the correct math process. MAKE SURE YOUR ANSWER MAKES SENSE!*Rational Numbers on a Number Line Identifying the location and order of different forms on a number lineFirst, identify the number of sections and their value (going up by one tenth, etc..)Then, determine where the rational numbers go, based on what percent or decimal they are*Rational NumbersOrdering from Least to Greatest and ComparingChange to the same form (usually percents or decimals)*Tax, Tip and Discount (using a calculator)Change the tax, tip or discount percent to a decimalMultiply the decimal with the costADD tax and tip to find total cost OR SUBTRACT discount to find sale price ................
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