Math Fun

Row 1

100

2x+12 = 20

x=4

200

x² = 9

x = 3 AND -3

300

2x² = 50

x = 5 AND -5

400

1/2 + 1/4

3/4

500

30 is what percentage of 50?

60%

Row 2

100

3x+15 = 21

x = 2

200

x² = 25

x = 5 AND -5

300

10x² = 10

x = 1 AND -1

400

1/2 + 1/8

5/8

500

60 is what percentage of 80?

75%

Row 3

100

10x + 20 = 90

x = 7

200

x² = 49

x = 7 AND -7

300

5x² = 45

x = 3 AND -3

400

1/5 + 1/3

8/15

500

18 is what percentage of 20?

90%

Row 4

100

5x - 10 = 40

x = 10

200

x² = 4

x = 2 AND -2

300

7x² = 700

x = 10 AND -10

400

1/2 - 1/5

3/10

500

What is 40% of 60?

24

Row 5

100

2x - 8 = 6

x = 7

200

x² = 36

x = 6 AND -6

300

3x² = 12

x = 2 AND -2

400

1/3 - 1/4

1/12

500

What is 80% of 40?

32