A=PW
Estimating Percents
Applying
Percent Change
Simple Interest
100
What is 24% of 80?
19.2
100
Estimate 11% of 31.
About 3
100
A jacket costs $80 and was on sale 20% off. What is the sale price?
$64
100
Find the percent change. 50 pounds to 35 pounds
30% decrease
100
What is the interest earned on a savings account with $600 at a rate of 5% for 12 years?
$360
200
15 is 30% of what number?
50
200
Estimate... 48% of 49
About 25
200
Sneakers that originally cost $42 were on sale for 15% off. What is the sale price?
$35.70
200
Find the percent change. 12 inches to 36 inches
200% increase
200
You start a saving account with $350. The simple interest rate is 3%. How much interest have you earned in 10 years?
$105
300
20 is what percent of 52?
about 38%
300
Estimate... 8% of 72
About 7
300
A Kindle's originally price was $120, but was on sale for 80% off. What was its sale price?
$24
300
Find the percent change. 16 cm to 44.2 cm
176.3% increase
300
Find the annual simple interest rate. I = $24 P = $400 t= 2 years
3%
400
20% of 150 is what number?
30
400
Estimate... 29% of 59
About 18
400
Your bill at a restaurant was $43.55, you leave the waiter a 15% tip. What was your total cost?
$50.08
400
Find the new amount. 4/5 to 3/5
25% decrease
400
You put $3000 in a CD at the promotional rate of 5.6%. How long will it take you to earn $336 in interest?
2 years
500
A pitcher throws 75 pitches. If these, 72% were strikes. How many strikes did the pitcher throw?
54 strikes
500
Estimate... 99% of 81
About 80
500
You go grocery shopping at Walmart and you total is $75.80 what do you pay with an added sales tax of 7%?
$81.11
500
Find the percent change. 5/4 to 3/8
70% decrease
500
You put $400 into an account. The account earns $18 simple interest in 9 months. What is the annual interest rate?
6%
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