3.04 Practice Quiz (11/9/20) 3rd, 6th, 7th

Solve for x:

x + 12 = -15

• -27

• -1

• 1

• 27

Tags

CCSS.6.EE.B.7

Identify the error: -8c - 15 = 17
Step 1: -8c - 15 - 15 = 17 - 15
Step 2:  $\frac{-8c}{-8}\ =\ \frac{2}{-8}$  

Step 3: c = -1/4

• Step 1: should have divide 15 on each side 

• Step 1: should have added 15 to each side 

• Step 2: should hvae divided by positive 8

• Step 2: should have subtracted 2 from each side

Tags

CCSS.HSA.REI.A.1

4x - 14 = 50

• x = 2.5

• x = 4

• x = 9

• x =16

Tags

CCSS.7.EE.B.4A

Write an equation:

When I subtract eight from my number, I get -1

• x + 8 = 1

• x - 8 = 1

• 8x = -1

• x - 8 = -1

Tags

CCSS.6.EE.B.7

Solve:

-60c = 60

• c = 1

• c = 120

• c = -1

• c = 0

Tags

CCSS.6.EE.B.7

Write an equation:

When I divide my number by 20, and then add 11, I get -55

• 20x + 11 = -55

•  $\frac{x}{20}\ +\ 11=\ -55$ 

• 20x - 11= 55

•  $\frac{x}{20}-55=\ 11$ 

Solve:

 $\frac{y}{-9}\ =\ -12$  

• 21

• -21

• -108

• 108

Tags

CCSS.6.EE.B.7

Solve:

-4a = 24

• a = -20

• a = 20

• a = 6

• a = -6

Tags

CCSS.6.EE.B.7

Solve:

-w = 9

• 1

• -1

• -9

• 9

Tags

CCSS.6.EE.B.7

Write an equation:

When I multiply my number by -3, I get 15

• 3x = 15

• 15x = 3

• -15x = -3

• -3x = 15

Tags

CCSS.HSA.CED.A.3