102_How do I know which math operation to do to solve a math problem?

How do I know which math
operation to do to solve a
math problem?
0011 0010 1010 1101 0001 0100 1011

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Miss Hartgrove
Hanes Middle School


Lesson Outline
0011 0010 1010 1101 0001 0100 1011

Today we are going to:
• Review the Four Step Plan to Solve Math
Problems
• Identify the four math operations
• Identify clue words that tell us which math
operation we need to use.

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Review
0011 0010 1010 1101 0001 0100 1011

Yesterday we talked about the four step plan to
solving math problems. To help us review
the steps to solve math problems, you are
going to do a matching game in your small
groups.
Look at your work system and get out your
blue folder. You should work in your small
groups to put the steps in order.

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What is a math operation?
0011 0010 1010 1101 0001 0100 1011

• Addition
• Subtraction
• Multiplication
• Division

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When you are asked to identify a
math operation, you are being
asked if you should add, subtract,
multiply, or divide!

0011 0010 1010 1101 0001 0100 1011

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Why do we need to learn math
clue words?

0011 0010 1010 1101 0001 0100 1011

Word problems do not specifically tell us to
add, subtract, multiply, or divide.

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We need to know the clue words so we can
determine if we should add, subtract,
multiply, or divide.


I should add when I see…
0011 0010 1010 1101 0001 0100 1011

•
•
•
•
•
•
•

Sum
Total
Increased by
Together
Altogether
Both
In all

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I should subtract when I see…
0011 0010 1010 1101 0001 0100 1011

•
•
•
•
•
•

Decreased by
Minus
Difference
How many more
How much more
Take away

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I should multiply when I see…
0011 0010 1010 1101 0001 0100 1011

• Of
• Times
• Product of

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I should divide when I see…
0011 0010 1010 1101 0001 0100 1011

• Per
• Quotient of

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Let’s practice
0011 0010 1010 1101 0001 0100 1011

Using the multiple choice cards, you should
work with your group to identify the math

operation that matches the clue word.

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How many more
0011 0010 1010 1101 0001 0100 1011

A. Addition
B. Subtraction
C. Multiplication
D. Division

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Per
0011 0010 1010 1101 0001 0100 1011

A. Addition
B. Subtraction
C. Multiplication

D. Division

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Product of
0011 0010 1010 1101 0001 0100 1011

A. Addition
B. Subtraction
C. Multiplication
D. Division

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altogether
0011 0010 1010 1101 0001 0100 1011

A. Addition
B. Subtraction
C. Multiplication

D. Division

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Let’s Practice
0011 0010 1010 1101 0001 0100 1011

To see how many of the clue words you
remember, you are going to complete a fill-inthe-blank activity. The fill-in-the-blank activity
is in your yellow folder.

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The completed activity will be used as a
resource for you as we solve math problems
throughout the year.


Match Time!
0011 0010 1010 1101 0001 0100 1011

You are going to work with your small group
to complete a matching activity. In the
envelope you will find two sets of cards.
Some of the cards will have math operations
written on them. Other cards will have
sentences from word problems that contain
some of the clue words. You are going to
match the clue words to the math operation.

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