Introduction to Basic Algebra

Presentation

•

Mathematics

•

7th - 9th Grade

•

Hard

Joseph Anderson

FREE Resource

6 Slides • 20 Questions

MATH: ALGEBRA INTRODUCTION

by MARIA RODRIGUEZ

CONTENT

TODAY WE ARE GOING TO REMEMBER

What is algebra
Algebraic expressions
Algebraic language
Evaluating algebraic expressions.

Open Ended

What is algebra? What is it about? What elements are part of algebra?

Type response here

Algebra's elements include:

Numbers
Variables
Operations symbols
Equal signs (in equations)
Solutions

Algebraic expressions

Represent information which includes a variable or unknown data.

DOES NOT have a solution since it is not an equation.

Algebraic language

We can translate situations or word problems into algebraic expressions.

As any language we need the vocabulary necessary to do that.

ADDITION: more than, increase, addition, sum of...
SUBTRACTION: difference, subtract from, less than (careful with this one!!)
MULTIPLICATION: times, product, *twice...
DIVISION: quotient, *half...

Multiple Choice

The difference of 3 times a number and 7

3 + 7n

3n - 7

3n + 7

3 / 7n

Multiple Choice

w increased by 5

w - 5

w + 5

w / 5

Multiple Choice

The quotient of a number and 8

8/g

g+8

g/8

Multiple Choice

2 times the sum of y and 5

2 + y + 5

2y + 5

2(y + 5)

2 - y + 5

Multiple Choice

Three times the sum of 2 and e.

3e+2

3(e-2)

3(e+2)

2e+3

Multiple Choice

The product of 7 and j increased by 3.

3+7j

7j-3

7(j+3)

3j+7

Evaluating algebraic expressions

Evaluate means to give value.

We will have expressions in which they want to know the value for a given value.

We will SUBSTITUTE the variable by the number we are given and then, we will solve the operation using the correct order of operations!

example: evaluate 2x+6 if x=3

2(3)+6

18 + 6

Multiple Choice

Evaluate the expression below for x=16. $\frac{x}{2}$

Multiple Choice

Evaluate the expression below for h=7.

Multiple Choice

Evaluate the expression below for e=81. $\frac{e}{9}$

1/9

Multiple Choice

Evaluate the expression below for c=5. $8c+25$

110

Multiple Choice

Evaluate the expression below for b=7. $b-5$

-12

Multiple Choice

Evaluate the expression below for j=6. $2j-7$

-5

Multiple Choice

Evaluate the expression below for f=8. $2f+7$

Multiple Choice

Evaluate the expression below for n=7. $8n-10$

Multiple Choice

Evaluate the expression below for w=4. $3w+17$

Multiple Choice

Evaluate the expression below for y=6. $8y-7$

Multiple Choice

If x = 5, what is the value of "Twice a number x decreased by 12"

-2

Multiple Choice

If y = (-3), what is the value of "The quotient of a number and 9"

-3

1/3

-1/3

Multiple Choice

"Ten less than twice a number" is expressed.....

10-2x

2(10) - x

2x - 10

2x+10

MATH: ALGEBRA INTRODUCTION

by MARIA RODRIGUEZ

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Introduction to Basic Algebra

MATH: ALGEBRA INTRODUCTION

​CONTENT

​Algebra's elements include:

​Algebraic expressions

​Algebraic language

​Evaluating algebraic expressions

MATH: ALGEBRA INTRODUCTION

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

CONTENT

Algebra's elements include:

Algebraic expressions

Algebraic language

Evaluating algebraic expressions