Addition Equations
Subtraction Equations
Writing Equations
Simplify Expressions
Decimal Equations
100
x + 18 = 24
x = 6
100
z - 7 = 11
z = 18
100
When Sean stands on a box he is 10 ft. tall. If the box is 4 ft tall, WRITE and SOLVE an addition equation to find Sean's height.
Equation- 4 + x = 10 OR x + 4 = 10 Solution- x = 6 ft tall
100

4a + 2a + 5 -2b

6a + 5 - 2b

100
a - 2.1 = 5.8
a = 7.9
200
23 = h + 11
h = 12
200
14 = m - 5
m = 19
200
Felise has $39.00. She has 8 less that her brother. WRITE and SOLVE a subtraction equation to find how much money her brother has.
Equation- x - 8 = 39 Solution- x = $47.00
200

-3c + 4c+ 8a - 3a

c + 5a

200
4.6 = e - 3.2
e = 7.8
300
54 = m + 9
m = 45
300
72 = g - 20
g = 92
300
If b - 10 = 5, what is the value of b + 6?
21
300

9c - 13c + 4a -5b

-6c + 4a - 5b

300
a + 6.1 = 8.4
a = 2.3
400
c + 8 = 11
c = 3
400
c - 41 = 16
c = 57
400
Devon is 13 years old. This is four years younger than his brother Todd. WRITE and SOLVE a subtraction equation to find Todd's age.
Equation- x - 4 = 13 Solution- x = 17 years old
400

6t - 5t + 7a - 3a

t + 4a

400
7.8 = x + 1.5
x = 6.3
500
564 = k + 21
k = 543
500
3,761 = y - 5,740
y = 9,501
500
It takes 43 facial muscles to frown. This is 26 more muscles than is takes to smile. WRITE and SOLVE an addition equation to find the number of muscles it takes to smile.
Equation- 26 + x = 43 Solution- x = 17 muscles
500

15c + 12 + 9c -3

24c + 9

500
76.325 = x - 21.318
x = 97.643
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