10/28 - One-Step Equations (Add/Subtract)

What what is the inverse operation of subtraction?

• addition
• subtraction
• multiplication
• division

Tags

CCSS.HSA.REI.A.1

What is the first step when solving an equation?

• Isolate the variable

• Randomly guess and check

• subtract from both sides

• draw a line down the equal sign

Tags

CCSS.7.EE.B.4A

When solving 234 + N =389, what operation would you use to find the answer

• multiplication
• addition
• subtraction
• division

Tags

CCSS.4.NBT.B.4

How do I solve:

• add 7.2
• subtract 7.2
• add 14
• subtract 14

Tags

CCSS.6.EE.B.7

In the equation

x + 7 = 12

7 is being added to the variable, x. How should you show your work to isolate the variable and solve the equation?

• Subtract 7 from both sides.

• Subtract 12 from both sides

• Multiply both sides by 7

• Add 12 to both sides

Tags

CCSS.6.EE.B.7

Solve:

-4.2 = y + 9.3

• -13.5 = y

• 13.5 = y

• 5.1 = y

• -5.1 = y

Tags

CCSS.6.EE.B.7

x - 62 = 123

How should you show your work to isolate the variable (x) 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

A wise man once said, "400 reduced by twice my age is 260." What equation represents how old the man is?

• 260-2a=400
• 400-260=2a
• 2a-400=260
• 400-2a=260

Tags

CCSS.HSA.CED.A.3

Solve the word problem.
After paying $5.12 for a salad, Nora has $27.10. How much money did she have before buying the salad?
Use the equation:
n−5.12=27.10

• $32.22
• $22.02
• $21.98

Tags

CCSS.6.EE.B.7

s - 22 = 50

• s = 28
• s = 20
• s = 72
• s = 75

Tags

CCSS.6.EE.B.7