3.10 Test Review (Expressions and Equations)

A mathematical sentence that contains variables, constants, and operations is called...

Tags

CCSS.6.EE.A.2B

These are used to "undo" each other in order to find the solution in an equation...

Tags

CCSS.6.EE.B.7

8(4 - 9) --> 8(4) + 8(-9) is called...

Tags

CCSS.7.NS.A.2C

Define a coefficient and give an example.

Tags

CCSS.6.EE.A.2B

Simplify the expression:

4(8x - 3)

• 12x - 12

• 24x - 1

• 32x - 12

• 32x + 12

Tags

CCSS.6.EE.A.3

Simplify the expression:

(4 - 9x - 3) 2

• 2 - 9x

• 8 - 18x

• -18x - 14

• 2 - 18x

Tags

CCSS.6.EE.A.3

Simplify the expression:

- 9m + 4 - 7m - 8

• -2m - 4

• -16m - 4

• -16m - 12

• 12 + 16m

Tags

CCSS.7.EE.A.1

Simplify the expression:

6y + 2(4 - y)

• 5y + 8

• 5y - 8

• 4y + 6

• 4y + 8

Tags

CCSS.6.EE.A.3

A triangle has side lengths 6w, w + 8, and 3w - 4

What expression represents the perimeter of the triangle? Also, what is the perimeter value if w = 2 ?

Answer explanation

Perimeter means the sum of all the sides. So 6w + w + 8 + 3w - 4 = 10w + 4

When you substitute in 2 for w, you'd get 10(2) + 4 which equals 24

Tags

CCSS.7.EE.A.1

4 + w = -7

Tags

CCSS.6.EE.B.7