Operation Relations

Inverses

100

Which pairs of operations are NOT inverses?

What is multiplication and addition, multiplication and subtraction, division and addition, division subtraction?

200

12 ÷ 3 × ______ = 12

12 ÷ 3 × _3___ = 12

300

45 × ______ ÷ 15 = 45 

-45 × __15__ ÷ 15 = -45 

500

4.5 x 20 ÷ 20 = _____

4.5 x 20 ÷ 20 = _4.5__

Equivalent Expressions

100

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

8 x 9 = 72

200

4 x 9 

9 + 9 + 9 + 9 

300

Create a multiplication and addition subtraction equation with the numbers 450, 150, and a variable.

450 - x - x - x = 0

x = 150

400

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

56 - 8 - 8 - 8 - 8 - 8 - 8 - 8 = 0.  

500

Explain why 30 ÷

Because division is repeated subtraction, and in this equation x is subtracted from 30 a total of six times.

Definitions

100

Define absolute value.

The distance a number is away from zero.

200

Variable

Any letter that represents any unknown positive or negative number.

300

Inequality Statement

An equation that uses symbols, <, >, =, to compare two numbers.

400

Identity Statement

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

500

Equivalent Expression

Expressions that are the same, even though they may look a little different.

Misc.

100

True or False: x + 6g - 6g = 6

False

200

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

Because 16 is father from 0 than 9.

300

Define equivalent

similar or identical in value

400

What is the amount of change in the equation 2f - 4e + 4e = 2f

None

500

Combine the like terms in the equation u + u - u + e + e + e + r + r + r + r + r + r

6r + 3e + u

Value of 'x'

100

30 / x = 6 

x = 5

200

67 + x = 890

823 = x

300

x / 9 = 4

x = 54

400

7x = 98

x = 14

500

49 - x = 13

x = 36