Mental Math Equations/ One Step Addition Equations

r + 20 = 27

• r = 7
• r = 47
• r = 13
• r = 20

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

S + 18 = 24

• S = 42

• S = 3²

• S = 18

• S = 6

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. The solution is x = 5.
• Add 7 to both sides.
  The solution is x = 19.
• Multiply both sides by 7 The solution is x = 84.

Tags

CCSS.6.EE.B.7

17 = x + 3

• x = 20
• x = 14
• x = 13
• x = 19

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

What is the inverse operation of subtraction?

• addition

• subtraction

• multiplication

• division

Tags

CCSS.7.NS.A.1

x + 12 = 20

• x = 32

• x = 15

• x = 8

• x = 30

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

What is the solution of the equation? 
8 = x + 1

• 9
• 7
• 6
• 8

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.7

r + 12 = 25

• 37
• 13
• 300
• Answer not Given

Tags

CCSS.6.EE.A.2

CCSS.6.EE.B.5

CCSS.6.EE.B.7

y + 51 = 99

• 140
• 150
• 48
• Answer not Given

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7

Solve the equation: 
x + 7 = 12

• x = 5
• x = 19
• x = -5
• x = 84

Tags

CCSS.6.EE.B.5

CCSS.6.EE.B.6

CCSS.6.EE.B.7