Replacing Numbers With Letters

math phrase that combines numbers AND variables (letters: 3b or 5x) by using (+, -, *, ÷). *does not have an equal sign (=)

• algebraic expression

• equivalent expressions

• reduce

• substitution

• ratio

replacing a variable with a number or expression

• equivalent fractions

• substitution

• evaluate

• equivalent expressions

• similar figures

a letter that represents an unknown value

• evaluate

• equivalent ratios

• variable

• substitution

• expression

2(b) + 8= __________
b=2

• 12

• 10

• 16

• 8

(c-10) + 8= ________
c= 10

• 8

• 0

• 2

• 4

2(b) - 3=______
b=5

• 2

• 10

• 1

• 7

The letters or symbols in a mathematical expression that represent unknowns are called...

• coefficients

• terms

• constants

• variables

• 1/8
• 1/2
• 1/24
• 1/16

• 1/48
• 1/6
• 1/8
• 1/24

• 1/4
• 1/8
• 1/2
• 1/6