One-Step Equation (Addition)
What is the inverse operation would you use to solve the equation, x + 7 = 13
subtraction
What is the inverse operation would you use to solve the equation, x - 7 = 13
addition
What is the inverse operation would you use to solve the equation, t x 7 = 21
division
What is the inverse operation would you use to solve the equation, x ÷ 4 = 4
multiplication
Write and solve an equation.
Christa is saving for a new tablet. It costs $70, including tax. She has already saved $35. How much more does she need to save?
x + 35 = 70
- 35 -35
x = 35
Christa needs to save $35 more dollars.
a + 3 = 24
a=21
x - 3 = 24
x=27
5b = 15
b=3
b ÷ 5 = 15
b=75
Write and solve the equation.
Bella bought packs of stickers to give to her friends. Each pack cost $4. She spent a total of $12 on stickers. How many packs did she buy?
4x = 12
divide by 4
x = 3
Bella bought 3 packs.
m + 89 = 108
m=19
m - 27 = 94
m=121
2d = 150
d=75
p ÷ 4 = 15
p=60
Write and solve an equation.
Pete played in two basketball games. He scored 4 fewer points in the second game than he scored in the first. He scored 12 points in the second game. How many points did he score in the first game?
x - 4 = 12
+4 +4
x = 16
Pete scored 16 points in the first game.
t + 78 = 88
t=10
p - 89 = 108
p=197
6c = 84
c=14
g ÷ 16 = 120
g=1920
Ellie brought stickers to give to 12 of her friends. Each friend received 4 stickers. How many stickers did she bring to school?
x / 4 = 12
multiply by 4
x = 48
Ellie needed to bring 48 stickers to school.
p + 0.3 = 0.8
p = 0.5
t - 36.4 = 43.9
t=80.3
1.4e = 84
e=60
g ÷ 3.5 = 12
g=42
Write and solve an equation.
Robert had money in his savings account. He spent $35 of it on a new jacket. He has $70 left. How much money did he have in his savings before he bought the jacket?
x - 35 = 70
+35 +35
x = 105
$105