Quiz: Lessons 4-1 and 4-2

What property of equality is being used?

4x + 3 = 72 + 3

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

What property of equality is being used?

y – 7 x 4 = 28 x 4

• Addition Property of Equality

• Subtraction Property of Equality

• Multiplication Property of Equality

• Division Property of Equality

Analyze the equation:

If 2d ÷ 4 = 5, does 2d ÷ 4 + 6 = 5 + 4? Why or why not?

• Yes, because the same number is added to each side.

• Yes, because each side is divided by the same number.

• No, because a different number is added to each side.

• No, because each side is divided by a different number.

Analyze the equation:

If 7s = 70, does 7s - 8 = 70 + 8? Why or why not?

• Yes, because the same number is added to each side.

• Yes, because the same number is subtracted from each side

• No, because a different number is added to each side.

• No, because the amount on one side is added and on the other side it is subtracted.

Solve the equation:

x + 12 = 20

• x = 32

• x = 12

• x = 8

• x = 20

Solve the equation:

18 + m = 28

• m = 28

• m = 46

• m = 10

• m = 18

Solve the equation:

12.3 = 3.4 + x

• 15.7 = x

• 8.9 = x

• 12.3 = x

• 3.4 = x

Solve the equation:

r + 13.2 = 15

• r = 13.2

• r = 15

• r = 1.8

• r = 11.7

What what is the inverse (opposite) operation of subtraction?

• addition

• subtraction

• multiplication

• division

Solve the equation:

x - 32 = 49

• x = 17

• x = 32

• x = 81

• x = 49