Equations

Presentation

•

Mathematics

•

6th - 8th Grade

•

Easy

Emily Phillips

Used 8+ times

FREE Resource

21 Slides • 18 Questions

Equations

Substitution

Taking a numerical value and plugging it in for the variable

What is Substitution

You will be given an expression and a variable value
Take the variable value and plug it in to solve

Here's an Example

5x + 2 when x = 6
Plug in 6 for x
5(6) + 2
Follow order of operations and solve
5 x 6 = 30
30 + 2 = 32
The answer to this expression is 32

You Try:

3x - 5 when x = 7
3(7) - 5
3(7) = 21
21 - 5 = 16
16 is the answer to this expression

Multiple Choice

Evaluate the expression for n = 6

9 - n

-3

Multiple Choice

Evaluate the expression for m = 2

Multiple Choice

Evaluate the expression for q = 3

1 + 2q

Multiple Choice

Evaluate the expression for h = –4

-12h - 100

148

-52

-148

Multiple Choice

The inverse operation for addition is multiplication

True

False

Multiple Choice

The inverse operation for division is subtraction

True

False

Multiple Choice

The inverse operation for addition is subtraction

The inverse operation for multiplication is division

True

False

Multiple Choice

Why is it important to remember "what you do to one side of the equation you MUST do to the other."

Because Ms. Phillips & Mr. Adamson said so

Because equations are hard to do

Because an equation must be balanced

I don't really know to be honest

Multiple Choice

Solve the equation:

15 + b = 23

b = 38

b = 8

b = 345

b = -2

Multiple Choice

Solve the equation:

3 + p = 8

p = 11

p = 24

p = 2

p = 5

Multiple Choice

Solve the equation:

26 = 8 + v

x = 18

x = 34

x = 4

x = 2

Multiple Choice

Solve the equation:

r -2 = 1

r = -3

r = 5

r = 3

r = 7

Multiple Choice

Solve the equation:

\frac{b}{4}=5

b = 16

b = 2

b = 20

b = 24

Multiple Choice

Solve the equation:

7m = 84

m = 588

m = 2

m = 16

m = 12

Multiple Choice

What value of a is a solution to this equation?

8a = 56

a = 5

a = 7

a = 12

a = 2

Multiple Choice

What value of s is a solution to this equation?

8 + s = 19

s = 11

s = 2

s = 27

s = 16

Multiple Choice

What value of q is a solution to this equation?

2q = 12

q = 6

q = 2

q = 16

q = 3

Multiple Choice

$2\ =\frac{q}{6}$

What value of q is a solution to this equation?

q = 6

q = 2

q = 4

q = 12

Equations

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