Addition and Subtraction Equations

Addition and Subtraction Equations

Solving Equations

• Use the inverse operation to solve.

• If the problem is an addition problem, use subtraction to solve.

• If the problem is a subtraction problem, use addition to solve.

Multiple Choice

What is the inverse operation of addition?

• Addition

• Subtraction

• Multipication

• Division

Multiple Choice

What is the inverse operation of subtraction?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

a + 3= 15

Would use subtraction or addition to solve?

• Addition

• Subtraction

Multiple Choice

t + 15= 25

Would use subtraction or addition to solve?

• Addition

• Subtraction

Multiple Choice

a - 3= 15

Would use subtraction or addition to solve?

• Addition

• Subtraction

Multiple Choice

r - 8 = 35

Would use subtraction or addition to solve?

• Addition

• Subtraction

Multiple Choice

y - 33 = 147

• y = 114
• y = 177
• y = 180
• Answer not Given

Multiple Choice

S + 18 = 24

• S = 42

• S = 8

• S = 7

• S = 6

Multiple Choice

g - 15 = 30

• g = 35

• g = 45

• g = 15

• g = 12

Multiple Choice

12 + y = 15

• y = -3

• y = 27

• y = 3

• y = -27

Multiple Choice

a + 4 = 11

• a = 3

• a = 7

• a = 4

• a = 11

Multiple Choice

 $86+z=99$  

•  $z=11$  

•  $z=13$  
  

•  $z=187$  
  

•  $z=-13$  

Multiple Choice

Solve

 $17=y-20$  

•  $y=3$  

•  $y=37$  

•  $y=-23$  
  

•  $y=-37$  

Multiple Choice

 $x-9=15$  

•  $x=6$  
  

•  $x=16$  
  

•  $x=23$  

•  $x=24$  

Multiple Choice

Solve

 $y+1.34=4.7$  

•  $y=6.04$  

•  $y=1.81$  

•  $y=3.46$  

•  $y=3.36$  

Multiple Choice

What equation matches this situation?

Jack had some markers and then bought 6 more. Now he has a total of 10 markers.

• m - 6 = 10

• m + 6 = 10

• 10 - 6 = m

• Answer not Given