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100
29 + b = 42
b = 13
100
32 = m - 7
m = 39
100
5p = 30
p = 6
100
b ÷ 12 = 12
b = 144
100
y + 45 = 84
y = 39
200
19 = n + 5.2
n = 13.8
200
w - 14 = 33
w = 47
200
6p = 36
p = 6
200
9 = h ÷ 4
h = 36
200
42 = b - 27
b = 69
300

Sally's tower is 12 inches taller than Mary's tower. If Sally's tower is 29 inches tall, write an equation that you could use to solve the height of Mary's tower.

29 = m + 12

300
c - 3.4 = 10
c = 6.6
300

Lisa bought 27 shirts. That is 3 times the number of shirts that Nick bought. Write a multiplication equation to the number of shirts that Nick bought.

3n = 27

300
24 = c ÷ 0.6
c = 14.4
300

Sam is 66 inches tall. That is 3 times the height of his cat. Write a multiplication equation to find the height of his cat.

3x=66

400
Solve: $12.50 + r = 32.20
r = $19.70
400

Mark bought 24 books more than Terry. If Terry bought 15 books, write and solve a subtraction equation that could be used to find the number of books that Mark bought.

m - 24 = 15; m=39 books

400
2.3g = 9.66
g = 4.2
400

There were 20 students that voted for Samantha to be the student council president. This is one fifth of the total votes. Write and solve a division equation to represent the total number of students who voted. 

x/5=20

400

Harry has $56 more than Paul. If Paul has $32, write and solve a subtraction equation to find out what Harry has.

h - 56 = 32; h = $88

500

Amy earned 28 points on her math test. This is 9.5 points more than Eli scored. Write and solve an addition equation to find the number of points Eli scored. 

e + 9.5 = 28; e=18.5 points
500
w - 22 = 4.68
w = 26.68
500

Kim went to the store and bought 5 books for a total of $18.50. Write and SOLVE a multiplication equation to figure out the amount of each book.

5b = $18.50 b = $3.70

500
16 = ⅔ z
z = 24
500

What is an example of an inverse (opposite) operation?

addition and subtraction multiplication and division