Unit 2 Percent Review

Unit 2 Percent Review

​This is your Unit Review!

• Take time to read (or listen to) each slide and solve each problem.

• Complete ALL the steps!

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• You may use a calculator.

Click on "Grades" in Math

​Look at every assignment in Unit 2.

Do you have any missing assignments?
Do you need to retake any quizzes?

If the answer is "yes" to either question, then do it!

Check your Unit 2 Percent Classwork in Classkick

​Slides 1, 2, and 3 should be complete.

We are doing slide 3, together, in class on TUESDAY (so you might have to check this later).

part = percent/100 x whole

​Equation

Find the missing "part"

Multiple Choice

What is 38% of 150?

• 38

• 5700

• 57

• 3.9

Multiple Choice

The jacket cost $52. If there is 8% sales tax, how much will the customer pay in sales tax?

• 4.16

• 416

• 4.00

• 6.50

How did you do?

​Part = percent/100 x whole

Be sure to change the percent to a decimal (by dividing by 100).

0.38 x 150 =
0.08 x 52 = (be sure you have 0.08 and not 0.8--which is 80%, not 8%)
0.35 x 160 =

whole = part / (percent/100)

Turn the percent into a decimal first, by dividing by 100.

​Equation

Find the missing "whole"

Multiple Choice

32 is 40% of what number?

• 1.25

• 0.8

• 80

• 12.8

Multiple Choice

75% of the students on the field trip brought their own lunch.
120 people brought their own lunch. How many people were on the field trip?

• 160

• 16

• 180

• 90

How did you do?

​Whole = part / (percent/100)

Be sure to change the percent to a decimal (by dividing by 100) first...before dividing the part by the percent.

32 / 0.40=
120/ 0.75=
4/ 0.40 =

Are you missing the part, the whole or the percent?

Circle Graphs

Multiple Choice

What percentage is peaches?

• 20%

• 25%

• 15%

• 30%

Multiple Choice

The school office kept track of 150 late excuses. How many people said they were late because they spent too long talking to friends in the hallway?
(see the circle graph for the %--it's the green one)

• 20

• 25

• 30

• 35

Multiple Choice

When asked, 50 people said they spent the most money on education. How many people completed the survey?
(see the circle graph for the %--it's the yellow one)

• 100

• 150

• 200

• 250

How did you do?

1. Find the percentage. Add up the known percents (40+20+15 = 75). Since circle graphs total 100%, then you can subtract 75% to get the remaining percent.

2. Find the part. 20% of 150, which is 0.20 x 150=

3. Find the whole. 50 is 20%, which is 50/0.20 =

Draw

How do you feel about this review?

Thank you!