Section 4-1

1. Objective: Write verbal phrases and sentences

as simple algebraic expressions and

equations.

2.Expression: a combination of

variables, numbers, and at

least one operation.

3. Equation: Same as an

expression but will have an equal sign.

4. The word is means =.

5. Addition words:PlusSum

More thanIncreased by

In all

Examples:A number increased

by 3N + 3

Three more runs than the Pirates scored.

P + 3

6. Subtraction words:Minus

DifferenceLess than

LessDecreased by

Examples:Five dollars less than

Jennifer earned.D – 5

7 decreased by 27-2

7. When the word than is in a phrase,

you write it backwards.

The than family is dysfunctional –

Write backwards

The Than Family (Write it Backwards)

8. Multiplication Words:Times

ProductMultiplied

Twice, Tripled, ect….Each

Examples:Twice a number

2xThe product of 4 and

a number 4n

9. Division words:Divided Quotient

Perseparate

Emily’s age divided by 3

125 students separated into n classes.

Fifteen increased by t

Nine dollars less than j

The product of r and 8

Larry’s age divided by 3

The sum of a number and four is -8

The product of a number and five is -20

Ten inches less than her height equals 26.

Seven more than twice his age is 51.

Two more than the number of cookies is 4.

Ten times the number of students is 280.

Five less than a number equals 31.

Three more than twice a number is 15.