The document discusses writing equations to represent word problems. It provides tips for solving word problems such as highlighting important information, drawing pictures, showing all work, and making sure the answer makes sense. Examples of word problems are provided such as Mary saving money each week to buy a printer, Sam earning money at his part-time job, and a babysitter charging for transportation and hourly rates.

1. POD
As you know, one way to tell an insect from a
spider is to count its legs. All insects have
six legs, and all spiders have eight legs. So
if some insects and spiders went to a dance,
and there were 48 dancing legs, how many
insects and how many spiders were at the
dance?
Four insects (24 legs) and three spiders (24
legs). No other combination will work.

2. Check HW

3. 2.5: Variables and Equations
You’ll learn how to write an equation
for a given problem

4. ddddddcEquation
Definition: Contains:
Examples: Non-examples:

5. In groups of 3 or 4…
• Think back to when we discussed writing
expressions…on your own, brainstorm a list
of key words that indicate mathematical
operations
• As a group, discuss everyone’s list and
create a group master list
• Assign each group member a number 1-4
• The lucky winner…report your group’s list

6. Writing Equations
“Two plus three is….”
Nine times five is forty-five.
Eighteen less than a number is thirty.
Key word to add
to our list 

7. Tips for solving word problems
**for our purpose today, we will write an equation that represents the situation**
Make it about you
Highlight/underline the question
Highlight/underline information needed
to answer the question
Draw pictures, if needed
Make sure to show all work…even if it
was done on the calculator or in your
head..WRITE IT DOWN
Make sure your answer makes sense
Label your answer

8. Tips for solving word problems
**for our purpose today, we will write an equation that represents the situation**
 Make it about you
 Highlight/underline the
question
 Highlight/underline
information needed to answer
the question
 Draw pictures, if needed
 Make sure to show all
work…even if it was done on
the calculator or in your
head..WRITE IT DOWN
 Make sure your answer
makes sense
 Label your answer
• Mary is saving $8
each week to buy a
printer. She has
already saved $28.
How many weeks will
it take to save a total
of $100?

9. Tips for solving word problems
**for our purpose today, we will write an equation that represents the situation**
 Make it about you
 Highlight/underline the
question
 Highlight/underline
information needed to answer
the question
 Draw pictures, if needed
 Make sure to show all
work…even if it was done on
the calculator or in your
head..WRITE IT DOWN
 Make sure your answer
makes sense
 Label your answer
• Sam earns $9 per hour
at his part-time job.
On Tuesday, he spent
$5 of his pay that day
on lunch. If he took
home $49 that day,
how many hours did
he work?

10. Dominos…
• Groups of 2…each person is assigned a
color
• Match each word problem to the equation
which may be used to solve it.
• One domino will match another at a star

11. Tips for solving word problems
**for our purpose today, we will write an equation that represents the situation**
 Make it about you
 Highlight/underline the
question
 Highlight/underline
information needed to answer
the question
 Draw pictures, if needed
 Make sure to show all
work…even if it was done on
the calculator or in your
head..WRITE IT DOWN
 Make sure your answer
makes sense
 Label your answer
• A babysitter charges
$12 for transportation
and $10 for each hour.
If she made $42 on a
job, how many hours
did she work?
Write your
name and
equation on
sticky note

12. ddddddcEquation
Definition: Contains:
Examples: Non-examples:

13. Key words that indicate
mathematical operations
• Individual List:
Add: Subtract:
Multiply: Divide:
• Group (Master) List:
Add: Subtract:
Multiply: Divide:

14. Tips for solving word problems
Make it about you
Highlight/underline the question
Highlight/underline information needed
to answer the question
Draw pictures, if needed
Make sure to show all work…even if it
was done on the calculator or in your
head..WRITE IT DOWN
Make sure your answer makes sense
Label your answer

15. Tips for solving word problems
 Make it about you
 Highlight/underline the
question
 Highlight/underline
information needed to answer
the question
 Draw pictures, if needed
 Make sure to show all
work…even if it was done on
the calculator or in your
head..WRITE IT DOWN
 Make sure your answer
makes sense
 Label your answer
• Mary is saving $8
each week to buy a
printer. She has
already saved $28.
How many weeks will
it take to save a total
of $100?

16. Tips for solving word problems
 Make it about you
 Highlight/underline the
question
 Highlight/underline
information needed to answer
the question
 Draw pictures, if needed
 Make sure to show all
work…even if it was done on
the calculator or in your
head..WRITE IT DOWN
 Make sure your answer
makes sense
 Label your answer
• Sam earns $9 per hour
at his part-time job.
On Tuesday, he spent
$5 of his pay that day
on lunch. If he took
home $49 that day,
how many hours did
he work?

17. Tips for solving word problems
 Make it about you
 Highlight/underline the
question
 Highlight/underline
information needed to answer
the question
 Draw pictures, if needed
 Make sure to show all
work…even if it was done on
the calculator or in your
head..WRITE IT DOWN
 Make sure your answer
makes sense
 Label your answer
• A babysitter charges
$12 for transportation
and $10 for each hour.
If she made $42 on a
job, how many hours
did she work?