Trimester 2 Exam Review

Percent problems

100

At a school, 40% of the sixth-grade students said that hip-hop is their favorite kind of music. If 100 sixth-grade students prefer hip-hop music, how many sixth-grade students are at the school?

250 students

200

Nate saves $75 on a laptop. The original cost of the laptop was $250. What was the percent of the discount?

30%

300

It takes Jacob 20 minutes to walk to school. It takes Andi 80% as long to walk to school. How long does it take Andi to walk to school?

16 minutes

400

The basketball team spent 25 minutes practicing offense, 40 minutes practicing defense, and 15 minutes stretching. What percentage of time did they spend practicing defense?

50%

500

For every three-point shot that Tyler took this season, he was successful 80% of the time. If Tyler successfully made 32 three-point shots, how many shots did he attempt?

40

Fractions, decimals, percents

100

What is 3/20 as a decimal and a percent?

0.15 and 15%

200

What is 0.40 as a fraction and a percent?

4/10 and 40%

300

What is 8% as a fraction and a decimal?

8/100 and 0.08

400

Mitchell has finished writing 60% of his essay for history class.

Write 60% as a fraction in simplest form.

Write 60% as a decimal.

3/5

0.6

500

Josie opens a savings account that earns 2% interest per year.

Write 2% as a fraction in simplest form.

Write 2% as a decimal.

1/50

0.02

Improper fractions to mixed numbers (or vice versa)

100

Change 8/3 to a mixed number

2 2/3

200

Change 22/6 to a mixed number

3 4/6 or 3 2/3

300

Change 1 3/4 to an improper fraction 

7/4

400

Change 4 5/8 to an improper fraction

37/8

500

Are these equivalent? Prove it!

7 3/8 and 60/8

No 

7x8 = 56

56 + 3 = 59 not 60

Adding and subtracting fractions

100

9/10 - 4/10 

5/10 = 1/2

200

3/12 + 7/12 

10/12 = 5/6

300

9/16 - 1/4

5/16

400

4/7 + 3/14

11/14

500

2 1/5 + 3 3/10 = 

5 1/2

Multiplying fractions

100

3/7 x 8

24/7 = 3 3/7

200

1/4 x 5/6

5/24

300

A group of students plays in the band. 1/4 of them play a brass instrument. Of these students, 2/3 play a trumpet. What fraction of the band plays the trumpet? 

2/12 = 1/6

400

At the local Italian restaurant, 4/8 of the meals are pasta dishes. Of these pasta dishes, 6/7 use spaghetti. What fraction of all the dishes use spaghetti?

If there are 63 dishes altogether, how many use spaghetti?

24/56 = 3/7

3/7 x 63 = 189/7 = 27

500

4 1/2 x 2/3

18/6 = 3