ratios and fractions as percents
decimals and percents
percent proportions
mental percents and estimating
simple interest
100
1:2 is what as a fraction?
50%
100
What is 70% or 7/10 as a decimal?
.70
100
What number is 75% of 4? (use the percent proportion)
75/100 = x/4 x =3
100
Estimate 9% of 40
9% is about 10% which would be 4
100
if you put $600 into a savings account for 5 years and the interest rate is 4% what is your interest earned?
$120
200
what is 25% as a fraction (in simplest form)?
1/4
200
66.66666% is what as a decimal?
.6666666
200
what is 33 and 1/3% of 180? (use the percent proportion)
33 1/3 = x 100 180 x =60
200
estimate 8 out of 37 as a percent
37 is close to 40 8 out of 40 = 1/4 = 25%
200
If you take out a loan for a car for $8,000, you pay the loan back over 12 months, and your interest rate was 6% what is the interest you owe?
$480
300
What is 1/5 as a percent and as a ratio?
20% and 1:5
300
3/4 or 75 percent is what as a decimal?
.75
300
50 is what percent of 400? (use the percent proportion)
50/400 = x/100 x = 12.5 12.5%
300
Estimate 66% of 72
66 and 2/3% = 2/3 1/3 of 72 = 24 2/3=48
300
would you rather have a bank account with 10% interest or 5% interest? what about a loan?
10% with a bank account 5% with a loan
400
what is 1:8 as a percent?
12.5%
400
1.25 is what as a percent
125%
400
what is larger 40 out of 400 or 15% of 250? (use the percent proportion)
40 15/100 = x/250 x = 37.5
400
in Portland, if 35% of the restaurants are on the water, and the city has 180 total restaurants. Estimate how many restaurants are on the water.
if we round 35 to 33 and 1/3% that is 1/3 60*2=180 so since 1/3 of 60 is 20 20*2=40
400
After 5 years, would you rather have an account that started with $80 and gained 10% or an account that started with $100 and gained 5%?
80+40=120 100+25=125
500
what is 175% as a ratio (in simplest form)
What is 7:4
500
5 is what as a percent
500%
500
Is 55% of 350 more of less than 195? show your work (use the percent proportion)
55/100 = x/350 x = 192.5 so less
500
Sam has read 19 books this year, 4 of which were science fiction. ESTIMATE the percent of books that were science fiction
round 19 to 20 4/20=1/5 =20%
500
if your interest earned from a savings account was $81 and you earned 6% for 3 years what was your principle (or your original amount)?
I=prt $81=$450*.06*3 $81
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