Addition Equations
Subtraction Equations
Multiplication Equations
Division Equations
Word Problems
100
x + 19 = 28
What is the inverse operation necessary to solve for x?
What is the solution for x?
Subtract 19 from both sides of the equation
x = 9
100
What is the inverse operation necessary to solve for x?
What is the solution for x?
Add 13 to both sides of the equation.
x = 42
100
8w = 48
What's the inverse operation necessary to solve for w?
What's the solution for w?
Divide both sides of the equation by 8.
w = 6
100
What's the inverse operation necessary to solve for c?
What's the solution for c?
Multiply both sides of the equation by 9.
c = 45
100
Kenny has 36 dogs, this is 14 more dogs than Dolly has.
Define the variable.
Write an addition equation.
Solve the equation.
36 = d + 14
Let d = the number of dogs Dolly has.
d = 22 dogs
200
20 + y = 37
What is the inverse operation necessary to solve for y?
What is the solution for y?
Subtract 20 from both sides of the equation.
y = 17
200
What is the inverse operation necessary to solve for d?
What is the solution for d?
Add 9 to both sides of the equation.
d = 12
200
5x = 45
What's the inverse operation necessary to solve for x?
What's the solution for x?
Divide both sides of the equation by 5.
x = 9
200
What's the inverse operation necessary to solve for m?
What's the solution for m?
Multiply both sides of the equation by 15.
m = 45
200
Mr. Smith has 13 students less than Ms. Acre. Mr. Smith has 18 students.
Define the variable.
Write a subtraction equation
Solve the equation.
Let a = the number of students Ms. Acre has.
a - 13 = 18
a = 31 students
300
What is the inverse operation necessary to solve for h?
What is the solution for h?
Subtract 1/2 from each side of the equation.
h = 3
300
What is the inverse operation necessary to solve for n?
What is the solution for n?
Add 1/10 to both sides of the equation.
300
9y = 54
What's the inverse operation necessary to solve for y?
What's the solution for y?
Divide both sides of the equation by 9.
y = 6
300
What's the inverse operation necessary to solve for a?
What's the solution for a?
Multiply both sides of the equation by 10.
a = 3,000
300
Elmo has 3 times as many friends as Big Bird. Elmo has 36 friends.
Define the variable.
Write a multiplication equation.
Solve the equation.
Let b = the number of friends Big Bird has.
3b = 36
b = 12 friends
400
What is the inverse operation necessary to slve for j?
What is the solution for j?
Add 15 to both sides of the equation.
j = 17
400
What is the inverse operation necessary to solve for g?
What is the solution for g?
Subtract 6 from both sides of the equation.
g = 11
400
-7p = 77
What's the inverse operation necessary to solve for p?
What's the solution for p?
Divide both sides of the equation by -7
p = -11
400
What's the inverse operation necessary to solve for t?
What's the solution for t?
Multiply both sides of the equation by 14.
t = -28
400
Subway employee, Sam, can make twice as many sandwiches than employee, Avery, can. Avery can make 60 sandwiches.
Define the variable.
Write a division equation.
Solve the equation.
Let s = the number of sandwiches Sam can make.
s/2 = 60
s = 120 sandwiches
500
What is the inverse operation necessary to slve for k?
What is the solution for k?
Add 4/5 to both sides of the equation.
500
What is the inverse operation necessary to solve for w?
What is the solution for w?
Subtract 8 from both sides of the equation.
w = 5
500
4h = -36
What's the inverse operation necessary to solve for h?
What's the solution for h?
Divide both sides of the equation by 4.
h = -9
500
What's the inverse operation necessary to solve for r?
What's the solution for r?
Multiply both sides of the equation by 6.
r = -432
500
Oscar Mayer produces 3 times as many hot dogs as Ball Park. If Ball Park produces 70,345,981 hot dogs per month. How many hot dogs does Oscar Mayer produce each month?
Define the variable.
Write a division equation
Solve the equation.
Let m = the number of hot dogs produced by Oscar Mayer each month.
m/70,345,981 = 3
m = 211,037,943 hot dogs