Inverses
Equivalent Expressions
Definitions
Misc.
Value of 'x'
100
Which pairs of operations are NOT inverses?
What is multiplication and addition, multiplication and subtraction, division and addition, division subtraction?
100

8 + 8 + 8 + 8 + 8 + 8 + 8 + 8 + 8

8 x 9 = 72
100
Define absolute value.
The distance a number is away from zero.
100
True or False: x + 6g - 6g = 6
False
100
30 / x = 6 
x = 5
200

12 ÷ 3 × ______ = 12

12 ÷ 3 × _3___ = 12

200
4 x 9 
9 + 9 + 9 + 9 
200
Variable
Any letter that represents any unknown positive or negative number.
200

Explain why -16 has a greater absolute value than -9.

Because 16 is father from 0 than 9.
200
67 + x = 890
823 = x
300

45 × ______ ÷ 15 = 45 

-45 × __15__ ÷ 15 = -45 

300
Create a multiplication and addition subtraction equation with the numbers 450, 150, and a variable.
450 - x - x - x = 0

x = 150

300
Inequality Statement
An equation that uses symbols, <, >, =, to compare two numbers.
300
Define equivalent
similar or identical in value
300
x / 9 = 4
x = 54
400

400

Represent 56 ÷ 8 = 7 using subtraction. Explain your reasoning.

56 - 8 - 8 - 8 - 8 - 8 - 8 - 8 = 0.  
400
Identity Statement

Equations that are true no matter what value is plugged in for the variable.

400
What is the amount of change in the equation 2f - 4e + 4e = 2f
None
400
7x = 98
x = 14
500

4.5 x 20 ÷ 20 = _____

4.5 x 20 ÷ 20 = _4.5__

500

Explain why 30 ÷

Because division is repeated subtraction, and in this equation x is subtracted from 30 a total of six times.
500
Equivalent Expression
Expressions that are the same, even though they may look a little different.
500
Combine the like terms in the equation u + u - u + e + e + e + r + r + r + r + r + r
6r + 3e + u
500
49 - x = 13
x = 36
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