Math 7 Semester 1 Review

Vocab

100

Two numbers that are the same distance from 0, but on both sides of 0

Opposites

200

Terms that have the same variables raised to the same exponent

Like Terms

300

The set of whole numbers and their opposites

Integers

400

Two equations that have the same solutions

Equivalent Equations

500

A number that can be written as  a/b  where a and b are integers and b ≠ 0

Rational Number

Ch 1

100

What is the absolute value of -6

6

200

Multiply (-6)(-8)

48

300

Subtract -8 - (-5) -1

-4

400

Find the mean: 2, 4, -4, -6, -6

-2

500

Evaluate 10 - x² - y when x = 8 and y = -4

-50

Ch 2

100

Write -0.22 as a fraction in simplest form

-11/50

200

Subtract -3/4 - 2/5

-23/20

300

Divide 0.54/0.9

0.6

400

Multiply (7/8)(-4/9)

-7/18

500

Solve -4.05 + 7.62 - (-2.05)

5.62

Ch 3

100

simplify:

10x-4+8-7x

3x+4

200

subtract:

(7x+8)-(-2x+8)

9x

300

Solve:

Z+5/3=4/3

Z=-1/3

400

Solve:

-z/6=4

z=-24

500

Solve:

4(x-3)=24

x=3

Ch 4

100

which direction would the arrow go for the inequalitiy:

y>-5

right

200

Solve:

x-8>-16

x>-8

300

solve:

-4z< 28

z>-7

400

solve and graph:

x+4>-17

x>-21

500

Solve and graph:

-y/7<12

y>-84