Back to Basics 1

Fractions

100

Without a calculator, reduce:  48/56

6/7

200

Without a calculator, reduce:  20/55

4/11

300

Evaluate without a calculator:  2/3 - 7/5

-11/15

400

Evaluate without a calculator:  3/4 x 8/9

2/3

500

Evaluate without a calculator:  -5/9 divided by 10/21

-7/6

Percents

100

Change .357 to a percent.

35.7%

200

Write 80% as a fraction in reduced form.

4/5

300

What is 36% of 180?

64.8

400

79.8 is 42% of what number?

190

500

60 is what percent of 800?

7.5%

linear equations

100

Solve for a:  

-2a = 3a - 15

a = 3

200

Solve for x:

10x - 9 + 2x - 3 = 8x - 18

x = -3/2

300

What is slope-intercept form?

y = mx + b

400

Solve for x:  5x - (7x + 9) = 11

x = -10

500

Write an equation of a line with slope -7 and passing through point (0,-3).

y = -7x - 3

Geometry

100

What is the perimeter of a rectangle with a length of 19cm and a width of 11cm?

60cm

200

What type of angle has a measure of between 90 degrees and 180 degrees?

obtuse angle

300

What is the area of a square with side 20cm?

400 square centimeters

400

What is the area of a triangle with a base of 12cm and a height of 8cm?

48 square centimeters

500

What is the length of the hypotenuse of a right triangle with sides 8cm and 15cm?

17cm

mental math

100

12 x 12

144

200

-100 - 70

-170

300

-8 + 6 - (-4) + (-2)

0

400

210 + (-110)

100

500

-155 + 245

90