Mathematics algebra refresh

What is a variable in Algebra?

• Something that changes
• An unknown value
• An equation
• A numeric expression

Tags

CCSS.6.EE.A.2B

What is an algebraic expression made of?

• Numbers and operations
• Numbers and multiplication
• Addition and multiplication
• Numbers and variables

Tags

CCSS.6.EE.A.2B

What is an algebraic                     expression for                 "the difference of r and 3"?

• r/3
• r + 3
• r - 3
• 3r

Tags

CCSS.6.EE.A.2A

A symbol for an unknown value is called a _______________. It is usually a letter such as a, X or Y.

• Constant
• Coefficient
• Operator
• Variable

Tags

CCSS.6.EE.A.2B

A mathematical sentence in which there are 2 expressions on either sided of an equal sign.  

• Expression
• Term
• Equation
• Operator

Tags

CCSS.6.EE.A.2B

Which is an equation?

• 4x = 9
• 4x - 9
• 4x
• - 9

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2

What is the "7m" in this expression?
7m - 9

• Expression
• Variable
• Coefficient
• Term

Tags

CCSS.6.EE.A.2B

Simplify

a + a = ?

• a²

• a¹

• 2a

• aa

Tags

CCSS.7.EE.A.1

Simplify

2b + b

• 3b

• b³

• b

• 2b

Tags

CCSS.7.EE.A.1

Simplify

4a x 8b

• 12ab

• 4ab

• ab

• 32ab

Tags

CCSS.HSA.APR.A.1