Math 8 - Expressions and Equations (IAB)

Select all expressions that are equivalent to 2x+3x+8-3x-2.

• 2x+6

• 2x+10

• 5x-3x+6

• 5x-3x+10

Tags

CCSS.6.EE.A.4

Enter the value of p so that the expression 3(4+n) is equivalent to 3(n+p).

Answer explanation

p = 4

since 4+n = n +4

Tags

CCSS.6.EE.A.4

Select all expressions equivalent to 6x-24.

• 6(x − 4)

• 2(3x-24)

• 3(2x-8)

• 3(3x-21)

Tags

CCSS.6.EE.A.4

Enter the number that makes the equation true.

Answer explanation

54 since 54/100 is equivalent to .54

Tags

CCSS.7.NS.A.1C

A dance instructor earns $75 for teaching 3 classes. The instructor receives a 10% raise. Enter how much the instructor earns, in dollars, per class after the raise.

Answer explanation

$75 = 3 classes

Therefore $25 per class. 10% raise = $2.5

So per class = $25+$2.50 = $27.50

Tags

CCSS.HSF-LE.A.1B

Select the expression equivalent to (-2x+8.1y)-(-9x+5.3y).

• - 11x+2.8y

• 7x+13.4y

• -11x+13.4y

• 7x+2.8y

Tags

CCSS.7.EE.A.1

Select all expressions that are equivalent to 5x+(x + 6)+3x.

• 8x+6

• 6x+6+3x

• 5x+6+3x

• 9x+6

Tags

CCSS.6.EE.A.4

Tracy had a total of $200 to spend while shopping. She has already spent $134 on clothes. She wants to buy some video games that are on sale for $20 each, including tax. Enter the maximum number of video games Tracy can buy with the remaining money.

Answer explanation

$200 - $134 = $66

$20 per game

$20x4 = $80

$20 x3 = 60

The maximum number of video games is 3 video games.

Which number line shows the solution to the inequality 4x+5≥9?

• A

• B

• C

• D

Tags

CCSS.7.EE.B.4B

Which number line shows the solution to the inequality −2x-3>-11?

• A

• B

• C

• D

Tags

CCSS.7.EE.B.4B