Equations (Addition and Subtraction)

Solve
4 = 2 + x

• x = 6
• x = 2
• x = 8
• x =-2

Solve
12 = y + 5

• y = 17
• y = -7
• y = 8
• y = 7

Solve
34.7 = y + 5.3

• y = 29.4
• y = 30.4
• y = 28.4
• y = 40

Solve
4.7 = y + 1.34

• y = 6.04
• y = 1.81
• y = 3.46
• y = 3.36

Together Brissa and Tania have 12 cats. If Brissa has 3, write an equation to find out how many cats Tania has.

• 12 - 3
• 12 = x - 3
• x + 3 = 12
• x = 9

Solve
x - 9 = 15

• x = 6
• x =-6
• x = 23
• x = 24

Solve
x - 11 = 3

• x = 9
• x =-9
• x = 14
• x = 13

Solve
1.54 = x - 2.9

• x = 4.44
• x = 1.36
• x = 4.34
• x = 1.37

Solve

 $y+1.34=4.7$  

•  $y=6.04$  

•  $y=1.81$  

•  $y=3.46$  

•  $y=3.36$  

Together Alex and Lilly have 12 cats. If Alex has 3, write an equation to find out how many cats Lilly has.

•  $12-3$  

•  $x-3=12$  

•  $x+3=12$  

•  $x=9$