Variable expressions and equations

What is the difference between an expression and equation?

• Expressions have an equal sign and equations do not have an equal sign
• Expressions do not have an equal sign and equations do have an equal sign
• There is not a difference
• Expressions do not have variables and equations have variables

Translate this phrase into an algebraic expression.
8 less than the product of 4 and a number
Use the variable m to represent the unknown number.

• 8 - 4m
• 8m - 4
• 8m + 4
• 4m - 8

Tags

CCSS.6.EE.A.2A

Write an algebraic expression for:
three times a number plus 16

• 3(16)+n
• 16n+3
• 3n+16

Tags

CCSS.6.EE.A.2A

Translate the sentence into an equation:
Four more than six times a number is 18.

• 4 + 6x = 18
• 4x + 6 = 18
• 6x + 4 = 18
• not enough info

Translate: Six fewer than twice a number is four.

• 6 - 2x = 4
• 2x - 6 = 4
• x² - 6 = 4
• 6 - x² = 4

Translate the statement into an equation:
The sum of three times a number and ten is equal to eight times the number.

• 3 + 10 = 8
• 3x + 10 = 8
• 3x + 10 = 8x
• 3(x + 10) = 8x

5m + 9n if m = -7 and n = 4

• 71

• 1

• -1

• -71

Tags

CCSS.6.EE.A.2C

x² - xy if x = 8 and y = -3

• 88

• 40

• -8

• -24

Tags

CCSS.6.EE.A.2C

5-(7+3)÷2

• 0
• -5
• 5
• 6

Tags

CCSS.7.NS.A.3

(7 + 41) ÷ 2 – 15

• 19
• 9
• 25
• 3

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2