Week 8 Monday warm-ups: Percents: multi-step setup problems/ Simple interest
KEY
Feel free to use your calculator.
1) REVIEW: What is 6.5% as a decimal? .065
2) REVIEW: What part of a year is 8 months? Express as a fraction in lowest
terms and as a decimal.
𝟐
𝟑
.6
3) REVIEW: What is 5% of $120? $6
4) Josh earns $12 an hour. Write an expression to show how much he’ll make
per hour after a 6% raise. You don’t need to solve—just write the expression.
Find the simple interest formula on your formula sheet and write it here:
I = Prt (I = interest P=principal r=rate t=time)
5) How much interest will there be on a $5000 loan at 8% interest for 2 years?
$800
6) If you take out a loan of $2000 for seven months at nine and half percent
interest, what’s the total you’ll have to repay? Write as money in terms of
dollars and cents. $2110.83
D. Stark 11/17/2016
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Week 8 Wednesday warm-ups: Percents: proportion method
Feel free to use your calculator.
KEY
1) REVIEW: What is 15% of $40? (Can you do it in your head?) $6
2) REVIEW: How much interest will there be on a $3500 loan at 7 ¼ %
interest for 18 months? $380.63
3) 84.5 is what percent of 130? 65%
4) The Beavers won 3 out of 5 of their games. What percentage did they win?
60%
5) 19.2 is 24% of what number? 80
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6) Julia scored 85% on her quiz. She got 17 questions correct. How many
questions total were on the quiz? 20
D. Stark 11/17/2016
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Week 8 Thursday warm-ups: Percents: % change (increase and decrease)/ Wrap-up on
percents
Feel free to use your calculator.
KEY
1) REVIEW: What is 2.5% of $180? $4.50
2) REVIEW: $63.70 is 3.5% of what number? $1820
3) REVIEW: If you save $5 out of every $80 you earn, what percent of your
earnings do you save? 6.25%
4) REVIEW: If you took out a loan for $3,000 at a rate of 7 ½ % for 9 months,
how much total would you need to repay at the end of 9 months? $3,168.75
5) The Martins bought a house for $120,000 and sold it for $160,000. To the
nearest percent, what was the percent increase in price?
𝟑𝟑%
6) Ted bought a car for $18,000 and sold it for $2,500. To the nearest percent,
what was the percent decrease in value? 86%
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Fall term review questions #8
KEY
Feel free to use your calculator.
1) 5.36  .08 = 67
𝟐𝟑
𝟑
2
3
2) + =
=
𝟏
5
4
𝟐𝟎
𝟐𝟎
3)
3
5

15
8

4
9
=
Express your answer as a mixed number.
𝟏
𝟐
4) What’s the distance between 42 and 37 on a number line? 5
5) Convert
2
5
to a percent. 40%
6) If your dog eats two 28 lb bags of food every 3 months, how long will three
bags feed your dog? 4.5 or
𝟒
𝟏
𝟐
months
7) Suppose you can type a 6,000 word essay in 2 hours and 5 minutes. How
many words per minute (wpm) do you type? 48 wpm
8) On a map the scale indicates that every 2 inches represents 35 miles. If
your planned trip is 3 inches on the map, how many miles in reality is that?
52.5 or 𝟓𝟐
𝟏
𝟐
miles
9) A shirt that originally cost $24 is on sale for 15% off. What’s the sale price?
$20.40
10) If you’ve done 14 out of 20 problems on your homework, what percent
have you NOT done yet? 30%
D. Stark 11/17/2016
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