Show:
Integers
Fractions
Decimals
Vocabulary
Word Problems
100
h - 21 = -52
What is -31
100
z - 2/9 = 1/9
What is 3/9
100
y + 16.7 = -49
What is =- 65.7
100
A phrase to help you remember how to write a related additon problem
What is "add the opposite"
100

You are five years older than your cousin.  How old is your cousin when you are 12 years old? Write and solve the solution.

c + 5 = 12

c = 7 years old

200
m - 5= -10
What is -5
200
2/5 + x = 1/4
What is - 3/20
200
c + 5.98 = 9.1
What is 3.12
200
The symbol used to represent a number not yet known.
What is a variable
200

Sarah has some apples. She buys 8 more apples, and now she has 15 apples. How many apples did Sarah have originally?

Equation:
Let x be the number of apples Sarah had originally.

x + 8 = 15 

x = 7 apples

300
n + (-14) = -31
What is -17
300
-1/15 + r = 3/5
What is 10/15
300
y- 57 = -2.8
What is 54.2
300
Another way of saying the variable is by itself on one side of the equal sign.
What is isolated
300

A bookshelf had some books. After giving away 6 books, there were 18 books left. How many books were on the bookshelf at first?

Equation:
Let x be the number of books on the bookshelf at first.

x − 6 = 18

x = 24 books 

400
p - (-13) = -10
What is -23
400
t - 3/4 = 25/4
What is 7
400
-18 = -9.6 + f
What is -8.4
400
The math term for the answer to an equation
What is a solution
400

Jenny had 3/4 a cup of flour. She added 1/2 cup of flour. How much flour does she have now?

Equation:
Let x be the total amount of flour Jenny has after adding the 1/2 cup of flour

x - 3/4 = 1/2

x = 1 1/4 cups of flour

500
- 45 - x = - 90
What is 45
500
-9/10 - x = -19/10
What is 1
500
h - (-5.6) = 1.2
What is - 4.4
500
Operations that undo each other are called this
What is inverse operations
500

Problem:
A tank had 7/8 gallons of water. After using 3/4 gallon, how much water is left in the tank?

Equation:
Let x be the remaining amount of water in the tank.



x + 3/4 = 7/8

x = 1/8 of water left in tank