Solving Equations - March 24

Mary went to the store and spent $12. She bought 3 equally priced notebooks. How much did each one cost?

• 3x = 12 ; where each book cost $4

• 3x = 12 ; where each book cost $36

• $\frac{x}{3}=12\ ;$ where each book cost $36.

• $\frac{12}{x}=3;$ where each book cost $4

Tags

CCSS.6.EE.B.7

x + 8 = 15

• x = 23
• x = 7
• x = 120
• x = 15/8

Tags

CCSS.6.EE.B.7

13 + y = 20

• y = 13
• y = 33
• y = 7
• y = 20/13

Tags

CCSS.6.EE.B.7

n - 4 = 12

• n = 16
• n = 8
• n = 4/12
• n = 12/4

Tags

CCSS.6.EE.B.7

8 - n = 12

• x = 4
• x = 20
• x = - 4
• x = -20

Tags

CCSS.6.EE.B.7

1/2 n = 10

• n = 10
• n = 5
• n = 20
• n = 12

Tags

CCSS.6.EE.B.7

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 
• Subtract 62 from each side.
• Multiply each side by 62.
• Add 123 to each side.

Tags

CCSS.6.EE.B.7

x ÷ 2 = 12

• x = 24
• x = 6
• x = 20
• x = 10

Tags

CCSS.3.OA.A.4

What is the inverse operation of division?

• Division
• Multiplication
• Addition
• Subtraction

Tags

CCSS.4.NBT.B.6

What what is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

Tags

CCSS.7.NS.A.3