7th grade math concepts

Solving equations

100

3+1x=15

What is 12?

200

5x+21=7

What is -2.8?

300

26+6x=14

What is -6?

400

50+16x=217

What is 10.43

500

316+3x=1561

What is 415?

Positive and negative numbers

100

-4X-5=

What is 20?

200

-15 X 2=

What is -30?

300

-10+3 X 7=

What is 11?

400

75/-15 X 3=

What is -15?

500

515/5 X -7+ 317

What is -404?

Measuring Circles

100

C= 15 X 3.14

What is 47.1?

200

C=3.14 X 23

What is 72.22

300

C=3.14 X 60

What is 188.40

400

A=3.14 X 10 X 10

What is 314?

500

A=3.14 X 36 X 36

What is 4085.72

Proportional Relationships

100

1,3

2,6

3,9

4,?

What is 12?

200

2,10

3,15

4,?

5,25

What is 20?

300

3,21

4,28

5,35

6,?

What is 42?

400

2,100

3,150

4,200

5,?

What is 250?

500

2,140

3,?

4,280

5,350

What is 210?

Percentages

100

15.00--> 30.00

What is 50%

200

100-->125

What is 80%?

300

50--> 25

What is 50%?

400

200--> 50

What is 25%?

500

15,000--> 3,000

What is 20%?