1. Copyright © 2000 by Monica Yuskaitis Revised by Frankie Welch 2012

2.  Percent can be defined as “of one hundred.” Copyright © 2000 by Monica Yuskaitis 100 of

3.  “Cent” comes from the Latin and means 100. Copyright © 2000 by Monica Yuskaitis Many words have come from the root cent such as century, centimeter, centipede, & cent.

4.  The letter C in Roman Numerals stands for 100 or “cent”. Copyright © 2000 by Monica Yuskaitis CCC means three hundred.

5.  We write our change from a dollar in hundredths. Copyright © 2000 by Monica Yuskaitis If you understand money, learning percents is a breeze.

6.  $.50 is ½ of a dollar  50% also means ½ Copyright © 2000 by Monica Yuskaitis 50¢ = $1.00

7.  50% means ½  50% of 6 stars is 3 stars Copyright © 2000 by Monica Yuskaitis = 50% of

8. Copyright © 2000 by Monica Yuskaitis 50%.50 50 100 1212 = == DecimalFraction Simplified Percent

9. Copyright © 2000 by Monica Yuskaitis 50 parts out of 100 or 50 hundredths. 12345678910 11121314151617181920 21222324252627282930 31323334353637383940 41424344454647484950 51525354555657585960 61626364656667686970 71727374757677787980 81828384858687888990 919293949596979899 100

10.  $.10 is 1/10 of a dollar  10% also means 1/10 Copyright © 2000 by Monica Yuskaitis = $1.00 10¢

11.  10% means 1/10  10% of 10 ice creams is 1 ice cream Copyright © 2000 by Monica Yuskaitis = 10% of

12. Copyright © 2000 by Monica Yuskaitis 10%.10 10 100 1 10 = == DecimalFraction Simplified Percent

13. Copyright © 2000 by Monica Yuskaitis 10 parts out of 100 or 10 hundredths. 12345678910 11121314151617181920 21222324252627282930 31323334353637383940 41424344454647484950 51525354555657585960 61626364656667686970 71727374757677787980 81828384858687888990 919293949596979899 100

14. .50 = 50% = 50/100 = ½ . 25 = .10 = .75 = .05 =  Now let’s see why..

15.  40% = 40 = 2 100 5  35% = ___ = ___ 35 7 10020 Do these: 24% 79% 98% Can you do this one? 103% Write a few for your seat neighbor and exchange. To go from percent to fractions, all you do is put the percent over 100! Then simplify.

16.  Method One  Multiply denominator by whatever it takes to get to 100. (equivalent fractions)  Do the same to the numerator.  4 x 20 = 80 = 80% 5 x 20 100 Do this one: 1 x _____ = _____ = _____% 4 x 100

17.  Method Two  Divide the denominator into the numerator to turn it into a decimal.  4 5 __ 0. 8___ fractions to perrrcents 5 l 4. 0 move decimal two - 4 0 times to the rrrright! _____ = 80%

18.  75% =.75  38% =.38  Do this one: 67% = ______ To change from percent to decimalllll just move the decimal two times to the lllleft. You can also divide the percent by 100.

19. Fractions Decimals Percents  1/5 =.20 = 20% Copyright © 2000 by Monica Yuskaitis