How to Create Word Problem Equations

How to Create Word Problem Equations

What are the parts of an equation?

1. variable

2. numbers

3. operation (multiply, divide, add, subtract)

4. equal sign

How to locate parts of a word problem to create equation

• variable: what is the unknown that I need to find

• numbers: what do they mean

• operation: key words

• equal sign: is / total

Problem

Andrew has saved $55 toward the purchase of a new phone. The phone is a total cost of $145. Write an equation to represent the amount Andrew needs to save to buy the phone?

variable: c-savings for a new phone

Andrew has saved $55 toward the purchase of a new phone. The phone is a total cost of $145. Write an equation represents the amount Andrew needs to save to buy the phone?

number: $55=savings for a new phone

Andrew has saved $55 toward the purchase of a new phone. The phone is a total cost of $145. Write an equation represents the amount Andrew needs to save to buy the phone?

operation: key words- Andrew has, total cost, amount needed

Andrew has saved $55 toward the purchase of a new phone. The phone is a total cost of $145. Write an equation to represent the amount Andrew needs to save to buy the phone?

equal sign: what goes after the equal sign=$145

Andrew has saved $55 toward the purchase of a new phone. The phone is a total cost of $145. Write an equation to represent the amount Andrew needs to save to buy the phone?

Lets create the equation

55 + c = 145

How much more does Andrew needs to save???

How much more does Andrew needs to save???

c = $90

Your turn

Suppose a Scientist has 3.68 liters of acid and needs 16.05 liters for and experiment. How many more liters of acid does she needs for the experiment?

Multiple Choice

What does the variable represent

• the total cost

• how much more is needed to save

• what is already saved

Multiple Choice

What is the $145?

• how much more is needed

• total cost of the phone

• less amount needed

Multiple Choice

What is the equation

• 55 - c= 145

• 55/c = 145

• 145 + 55 = c

• 55 + c = 145

Yeaaa