Math

Solving equations

100

9x+72=90

What is the solution for x?

x=2

200

8x-12=60

What is the solution for x?

x=9

300

15x+20=170

What is the solution for x?

x=10

400

12x+36=72

What is the solution for x?

x=3

500

50x-50=200

What is the solution for x?

x=5

Division

100

What is 75/15? 

5

200

What is 108/12?

9

300

What is 432/36?

12

400

What is 480/16? 

30

500

What is 390/15?

26

Area

100

A rectangle has a width of 15in and a height of 5in. What is the area of the rectangle?

75in²

200

A square has a length of 42ft on all sides. What is the area?

1,764ft²

300

A trapezoid has a length of 12.5cm and 14cm. It has a height of 22cm. What is the area of the trapezoid?

291.5cm²

400

A parallelogram has a length of 25m and a width of 34m. What is the area?

850m²

500

A circle has a diameter of 24cm. What is the area of the circle? 

452.16cm²

Circumference

100

The diameter of a circle is 18. What is the circumference of the circle?

56.52

200

The radius of a circle is 20. What is the diameter?

125.6

300

The diameter of a circle is 55. What is the circumference?

172.7

400

A circle has a radius of 30. What is the circumference of the circle?

188.4

500

A circle has a diameter of 90. What is the circumference? 

282.6

Proportions

100

Lea answered 6 out of 20 questions incorrectly. How many questions should Lea answer correctly out of 30 questions?

21 questions

200

The jewelry store received 600 pieces of jewelry, but 6 were damaged. If she gets an order of 7,000 jewelry pieces, how many pieces will be damaged?

70

300

A 6 ounce cup of coffee costs $5.50. If the unit rate stays the same, how much would 6 quarts of coffee cost?

176

400

At a wedding reception, they were able to prepare 6 tables in 45 minutes. How many tables can they prepare in 4 hours?

32

500

Myra has bought 30 pencils for $100. How much would 45 pencils cost?

150