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Percent of Change

EstimatingWith

Percents

Proportions and Equations

Order PercentsFractions

and Decimals

Mish Mosh

Question Column 1-100

John paid $7.50 for a movie ticket last week. He went again

on Saturday and caught a deal for only $5. What is the percent of

change in the ticket prices?

Answer Column 1-100

1What is 33 %

3

Question Column 1-200

Ariel caught the greatest sale ever. She found a sweater marked down from $60 to $35. What is the percent of change?

Answer Column 1-200

2What is 41 % ?

3

Question Column 1-300

Richmond pinned an opponent in 40 seconds last week. This week he

pinned his opponent in 35 seconds. What is the percent of change?

Answer Column 1-300

1What is 12 % ?

2

Question Column 1-400

Brandon ran the 40 yard dash in 4.5 seconds last year. This year he ran it in 4.25 sec. What is the percent of change in his speed?

Answer Column 1-400

5What is 5 %

9

Question Column 1-500Dayla completed 150 problems on

Study Island just for fun. She decided she would try to increase her efforts by a doing just a few more. She completed 225 more. What is

her percent of change for her performance?

Answer Column 1-500

What is 50%?

Question Column 2-100

Jessica saw a pair of jeans marked down 35% . They were originally $70. Estimate how much these jeans will cost her.

Answer Column 2-100

33% is about 30%

10% of 70 is $7

3 x $7 = $21

70-21 = $49

The jeans will cost about $49

Question Column 2-200

Tyree wanted to estimate his free throw accuracy. So far he has made 79 throws out of 92 attempted. What

is an estimate of his accuracy?

Answer Column 2-200

79 out of 92 throws

79 is about 80

90 is close to 92

80 out of 90 is about 88%

Question Column 2-300

Malik wanted to estimate his batting average over the last year. He was up to bat 178 times and hit it 57 times.

Answer Column 2-300

178 is about 180

57 is about 60

60 out of 180 is 33 1/3%

Question Column 2-400

Janille saw a pair of shoes for marked down 35%. The price of the shoes was $83. Estimate the sale price.

Answer Column 2-400

35% of $83

35% is close to 27.5% which is 3/8

83 is close to 80

1/8 of 80 is 10

3/8 of 80 is 30

She will pay about 80 – 30 = $50

Question Column 2-500

Harbeen wants to buy a new phone. It is marked down 17.5%. The

phone’s price is $147. Estimate the cost of the phone.

Answer Column 2-500

17.5% is about 20%

$147 is about $150

20% of $150

10% is 15

20% is then $30

150 – 30 = $120

Question Column 3-100

Nathan wants to buy a computer that costs $1600. It is marked down 35%. Set up a proportion to find the cost.

Answer Column 3-100

35100 1600100 35 1600

100 56,000100 100

560

1600 560 $1040

x

x

x

x

Question Column 3-200

Nathan earned 29 points out of 32 point social studies exam. What was

his percent? Use the equation method to solve.

Answer Column 3-200

What percent of 33 is 29

33x=29

33 33

X is .8787..

X is about 88%

Question Column 3-300

Alyssa earned a 98% on her math test. What was her score if there were

50 questions on the test?

Use an equation to solve.

Answer Column 3-300

Alyssa earned a 98% on a test with 50 problems.

What was her score?

.98 50 = x

49 = x

Question Column 3-400

Malik’s math test had a big bright 92% written on it and a 23. He wanted to know how many points the test was worth. Set a up a proportion for this problem and solve it.

Answer Column 3-400

92 2310092 x = 23 100

92 230092 92

25

x

x

x

Question Column 3-500

LaShawn saw a computer game on sale for $35. It’s original price was $60. He wanted to know what the percent off was. Set up a proportion to calculate the percent.

Answer Column 3-500

35100 6060 x = 35 100

60 350060 60

158.3% or 58 %

3

x

x

x

Question Column 4-100

Order the following from least to greatest

3 7 .78 35%

8 16

Answer Column 4-100

3 7 .78 35%

8 16.375 .78 .35 .4375

3 735% .78

8 16

Question Column 4-200

Order from least to greatest

7 11 .73 83%

8 15

Answer Column 4-200

7 11 .73 83%

8 15

.875 .73 .83 .73

11 7.73 83%

15 8

Question Column 4-300

Fox news said there is a 83% chance of rain. Channel 5 said there is a 7/9 chance of rain while channel 3 said there is a 8/11 chance of rain. List the chances in order from least to greatest.

Answer Column 4-300

7 883%

9 11

.83 .7 .72

8 7 .83

11 9

Question Column 4-400

Order least to greatest

5 9 19 79%

6 12 24

Answer Column 4-400

5 9 19 79%

6 12 24

.83 .75 .7916 .79

9 19 5 79%

12 24 6

Question Column 4-500

The average score for Mr. Pinney’s class was 76%, Mrs. Maniglia’s class was 23/30 and Mrs. Berkley’s class was 27/35. List the scores from least to greatest. Which class scored the highest?

Answer Column 4-500

23 2776%

30 35

.76 .76 .7714285

. ' Yeah US!!!Mrs Berkley s

Question Column 5-100

Solve in simplest form.3

5

g gg

Answer Column 5-100

3 41

5 5

1 =

g g gg

gg g

Question Column 5-200Solve

5x – 3 = 4x + 4

Answer Column 5-200

  5x – 3 4x 4

-4x -4x

x - 3 = 4

+3 +3

x = 7

Question Column 5-300

A gameboy game is on sale for 25% off the regular price of $40. After the price reduction, a 6% sales tax is added on. Show how to calculate the final price.

Answer Column 5-300

25% of 40 = what

.25 40=x

.25 40=10

40-10=30

6% of 30 = what

.06 $30 = $1.80

$30 + $1.80 = $31.80

Question Column 5-400

Solve the following equation showing the inverse operations

 

 

-4 ( x – 7 ) = -2 (x + 3 )

Answer Column 5-400  

-4 ( x – 7 ) = -2 (x + 3 )

-4x + 28 = -2x – 6

+2x +2x

-2x + 28 = -6

-28 -28

-2x = -34

-2 -2

x = 17

Question Column 5-500

Thirty-five out of thirty-eight students take the bus to school each day. Which is the best estimate for the percent of these students who take the bus to school?

 

 

A. 10% B. 50% C. 70% D. 90%

 

Answer Column 5-500

c. 90%