Grade 8 Equations and Expressions

An _______ is a mathematical sentence that is created by placing an equal sign between two expressions.

An algebraic _______ is a mathematical phrase involving at least one variable and sometimes numbers and operation symbols; NO EQUAL SIGN

Write a expression for the phrase "18 times the number m"

• 18 + m
• 18 - m
• 18m
• 18 ÷ m

Tags

CCSS.6.EE.A.2A

Evaluate 24 - 4t for t = 4

• 20
• 24
• 8
• 6

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.6

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

Tags

CCSS.6.EE.A.3

Number that is multiplied by a variable in an expression or equation (the number in front of the variable).

• coefficient

• term

• constant

A number, a variable, or the product of a number and a variable.

• coefficient

• term

• constant

A value that does not change (without variable).

• coefficient

• term

• constant

7k - 14 = 42

• 7

• -8

• 0

• 8

Tags

CCSS.7.EE.B.4A

2(2x - 1) = 10

• 3

• 2

• 6

• 2.25

Tags

CCSS.7.EE.B.4A