Review of Real Numbers

Fractions

100

2/3 x 3/8

1/4

200

3/4 - 3/20

3/5

300

8/15 * 27/30

12/25

400

7/15 + 5/6

39/30

500

What is 7/8 divided by 21/32 ?

4/3

Negative Numbers

100

4 - 15

-11

200

-6 - (-11)

5

300

(-2)(-14)

28

400

-21 - 16 + 3(8-2)

-19

500

4(-3) / [2 + (-2)]

Undefined!

Order of Operations

100

-4²

-16

200

3(-2)² - 5

7

300

(-3 + 5) / (-1) x 2

-4

400

[1 - 4(-3) + (-8)] / [2 - (-3)]

1

500

-5² - (2 - 24) / [3 - 2(-4)]

-23

Expressions

100

Simplify: 8x - x + 6x

13x

200

Evaluate 3 + 8x - y when x = 3 and y=-9

36

300

Simplify: 5(x + 2) - (3x - 4)

2x + 14

400

If x=6, y=-2, and z=-3, evaluate (y + z -1)/x

-1

500

Evaluate: 2/5 * (15x) - 1/2 * (12x - 4)

2

Properties of Real Numbers

100

Simplify: 5(y-2)

5y - 10

200

Simplify: -(2x-4) + 4

-2x + 8

300

Which property is illustrated by: 2 + 8 = 8 + 2 ?

The commutative property!

400

4 and 1/4 are...

Reciprocals (or multiplicative inverses)

500

Which property is illustrated by: 8 + (9 + 3) = (8 + 9) + 3

The associative property