Math 7 CCSS Lesson Check: Expressions and Equations

What is the difference between an expression and an equation

• Expressions have an equal sign and equations do not

• Equations have an equal sign and expressions do not

Which of the following are true about an equation?

• Contains an equal sign

• May contain variables

• Has many solutions

• Shows two expressions are equal

Tags

CCSS.6.EE.A.2C

Natalie waters the lawn 3 times a week. If she watered the lawn 24 times in all, which equation could be used to find how many weeks she has been watering the lawn?

• x + 3 = 24

• 24 - x = 3

• 3x = 24

• x/3 = 24

Tags

CCSS.HSA.CED.A.3

Janeen's mother is 47. She is 26 years older than Janeen. Which equation can be used to find Janeen's age j?

• j + 26 = 47

• 26j = 47

• j - 26 = 47

• 47j = 26

Tags

CCSS.HSA.CED.A.3

Which of the following are expressions? (Select ALL that are correct.)

• 3x + 4

• twelve is three more than nine

• the difference of x and 8

• 2y

Evaluate the expression (4³ - 4) + 12 ÷ 3

• 64

• 12

• 24

• 6.6

Tags

CCSS.6.EE.A.1

Evaluate the expression:
15f - 60  if f = 5

• 15
• 95
• 30
• -45

Tags

CCSS.6.EE.A.2C

A group of variables, constants and operations that an include an equal sign

• Equation
• Constant
• Expression
• Variable

The objective when solving an equation is to.....

• Check the solution
• Guess and Check
• Isolate the variable
• Hope you get the right answer

Tags

CCSS.7.EE.B.4A

Which phrase matches the expression
y  -  6

• 6 decreased by a number, y
• A number, y, decreased by 6
• 6 minus a number, y

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2