EDM - Unit 6 review

Simplify

3(y+4) + 4(y-2)

Mathematical Equivalence

ON

Answer explanation

First distribute the 3 and 4 to the parentheses then combine like terms.

3(y+4)+4(y-2)

3y + 12 + 4y - 8

7y + 4

Solve using a bar model:

5f + 12 = 3f + 18

f = _____

Answer explanation

c

d

e

divide by 6

Multiply by 6

add 12

add 9w

subtract 9w

subtract 12

Solve any way you'd like:

3.5 = 1.8 + z

Solve the pan balance problem.

1 ball = _____ cubes

Paul is 8 years older than Julie. Julie is half as old as Paul. Let x represent Julie's age. Write an equation you can use to find Julie's Age

Mathematical Equivalence

ON

Paul is 8 years older than Julie. Julie is half as old as Paul.

Use the equation x + 8 = 2x to solve how old Julie is.

Julie is ____ years old.

Match the following equations to their solution sets

• x + 1 = 2

• {0}

• x + 1 = 1 + x

• { }

• |x| = 1

• {all numbers}

• x + 7 = 7

• {1}

• x + 1 = x

• {-1,1}