Math 1 - Ch. 3 Review

Translate the following word phrase into an algebraic expression: Twelve decreased by n

12 - n

Solve 6(8 +12)

120

Find the next three terms in the sequence: 3, 7, 11, 15, ...

19, 23, 27

Find the next three terms in the sequence: 3, 12, 48

192, 768, 3072

Evaluate the expression: ab + 8, for a = 6 and b = 3

26

Translate the following word phrase into an algebraic expression: Two less than three times a number.

3n - 2

Solve 4(9+6)

60

algebraic expression

A combination of variables, numbers, and at least one operation.

Variable

A letter or symbol that represents a number.

equation

A mathematical sentence that contains an equals sign.

Solution

A value that makes an equation true

Solve the equation: a - 17 = 23

a = 40

Distributive Property

a(b + c) = ab + ac

Identity Property

a+0=a or a*1=a

Commutative Property

a+b=b+a

Solve the equation: n + 2.8 = 5.7

n = 2.9

Evaluate

to replace a variable with a number and solve an expression using order of operations

Solve the equation: 9w = 108

w = 12

Associative Property

(a+b)+c=a+(b+c)

Translate the following word phrase into an algebraic expression: The quantity of t minus 31.

(t - 31)

Evaluate the expression: 5y + 7, for y = 20

107