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Section 9.7. Fractions, Decimals, and Percents. Changing a decimal to a percent. To change a ________ to a________, multiply by ____ (move the decimal _____ ___ places) and write ___. decimal. percent. 100. right. 2. %. Ex 1). .36. Solution:. .36 * 100 =. 36. , so the solution is.
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Section 9.7 Fractions, Decimals, and Percents
Changing a decimal to a percent • To change a ________ to a________, multiply by ____ (move the decimal _____ ___ places) and write ___ decimal percent 100 right 2 % Ex 1) .36 Solution: .36 * 100 = 36 , so the solution is 36 % Ex 2) .004 Solution: .004 * 100 = 0.4 , so the solution is 0.4 % Ex 3) 4) 5) 6) 7) 8) .14 1.36 .009 .089 .33 .919 14% 136% 0.9% 8.9% 33% 91.9%
Changing a fraction to a percent • To change a _______ to a_______, divide the ___ number by the _______ number, then multiply by ____ and write ___ fraction percent bottom top 100 % Ex 9) Solution: 3 ÷ 5 = .6 .6 * 100 = 60 , so the solution is 60 % Ex 10) Solution: 7 ÷ 4 = 1.75 1.75 * 100 = 175 so the solution is 175 % Ex 11) 12) 13) 14) 15) 16) 50% 25% 875% 200%
Changing a percent to a fraction • To change a _______ to a_______, write the ______ over _______ and simplify. percent fraction percent 100 Ex 17) 15% Solution: = Ex 18) 18 1/2% Solution: = = = Ex 19) 20) 21) 22) 23) 24) 23% 36% 14.3% 30%
Changing a percent to a decimal • To change a _______ to a_______, divide by ___ (move the decimal _____ ___ places) and remove the ___. percent decimal 100 left 2 % Ex 25) 15% Solution: 15% = .15 Ex 26) 183% Solution: 183% = 1.83 Ex 27) 28) 29) 30) 31) 32) 5% 462% 82.5% 18.35% .4 .05 4.62 .019 .825 .1835
Assignment • WS 9.7
