Percent Study Guide 6A no B constructed yet.
1. 340% expressed as a mixed number in simplest form is ____________.
2. 7 % expressed as a decimal is ____________________.
3. 3 2/3 expressed as a percent is ___________________.
4. 64/120 expressed as a percent rounded to the nearest whole number is ________________.
Find the quantity represented by each percent.
5. 20% of 160 ft
6. 95% of $1,250
Find the missing value.
7. 85% of ______ is 187
Solve. Show your work.
8. Of the 600 people at a concert, 42% of them are teenagers. How many teenagers are a the concert?
9. A table costs $450. There is also a sales tax of 7%. How much does the table cost, including sales tax.?
10. The amount of water in a bottle is reduced by 85% to 138 milliliters. How much water was originally in the bottle?
11. Mrs. Boyce earns $3,000 every month. She spends 25% of her earnings on rent and 30 % of the remainder for transportation. how much does she spend on transportation?
12. For an after school activity 300 balls are hidden. 40% of them are yellow and the rest are white. Sue's team finds 20% of the yellow balls and 80% of the white balls. How many balls did Sue's team find?
ANSWER KEY
1. 340/100 = 3.4 = 3 4/10 = 3 2/5
2. 0.07
3. 3 2/3 expressed as a percent is 366.66% or 367%.
4. 64/120 expressed as a percent rounded to the nearest whole number is ______ 53% __________.
Find the quantity represented by each percent.
5. 20% of 160 ft .2 x 160 = 32
6. 95% of $1,250 .95 x 1250 = 1187.50
Find the missing value.
7. 85% of ______ is 187. 187 = 85%
187/85 = 2.2/1 so 220/ 100
.85 x 220 = 187
Solve. Show your work.
8. Of the 600 people at a concert, 42% of them are teenagers. How many teenagers are a the concert?
.42 x 600 = 252
9. A table costs $450. There is also a sales tax of 7%. How much does the table cost, including sales tax.?
.07 x 450 = $31.50
$450 + 31.50 = $481.50
10. The amount of water in a bottle is reduced by 85% to 138 milliliters. How much water was originally in the bottle?
138 is 15% 138/15 = 9.2/1 so 920/100
check: 920 - 920 x.85 = 920-782 = 138. so 920 is the original amount!
11. Mrs. Boyce earns $3,000 every month. She spends 25% of her earnings on rent and 30 % of the remainder for transportation. how much does she spend on transportation?
.25 x 3000 = $750 rent 3000 earned - 750 rent = 2250 remaining.
.3 x 2250 = $675 on transportation
12. For an after school activity 300 balls are hidden. 40% of them are yellow and the rest are white. Sue's team finds 20% of the yellow balls and 80% of the white balls. How many balls did Sue's team find?
Yellow: 300x.4 = 120 White 300 x .6 = 180
Sue's team: Yellow- .2 x 120 = 24 White- .8 x 180 = 144
24 + 144 = 168 balls in total.