42510011 0010 1010 1101 0001 0100 1011

How do I know which math operation to do to solve a

math problem?

Miss Hartgrove

Hanes Middle School

4251

0011 0010 1010 1101 0001 0100 1011

Lesson Outline

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.

4251

0011 0010 1010 1101 0001 0100 1011

ReviewYesterday 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.

4251

0011 0010 1010 1101 0001 0100 1011

What is a math operation?

• Addition

• Subtraction

• Multiplication

• Division

4251

0011 0010 1010 1101 0001 0100 1011

When you are asked to identify a math operation, you are being

asked if you should add, subtract, multiply, or divide!

4251

0011 0010 1010 1101 0001 0100 1011

Why do we need to learn math clue words?

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

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

4251

0011 0010 1010 1101 0001 0100 1011

I should add when I see…

• Sum

• Total

• Increased by

• Together

• Altogether

• Both

• In all

4251

0011 0010 1010 1101 0001 0100 1011

I should subtract when I see…

• Decreased by

• Minus

• Difference

• How many more

• How much more

• Take away

4251

0011 0010 1010 1101 0001 0100 1011

I should multiply when I see…

• Of

• Times

• Product of

4251

0011 0010 1010 1101 0001 0100 1011

I should divide when I see…

• Per

• Quotient of

4251

0011 0010 1010 1101 0001 0100 1011

Let’s practice

Using the multiple choice cards, you should work with your group to identify the math operation that matches the clue word.

4251

0011 0010 1010 1101 0001 0100 1011

How many more

A. Addition

B. Subtraction

C. Multiplication

D. Division

4251

0011 0010 1010 1101 0001 0100 1011

Per

A. Addition

B. Subtraction

C. Multiplication

D. Division

4251

0011 0010 1010 1101 0001 0100 1011

Product of

A. Addition

B. Subtraction

C. Multiplication

D. Division

4251

0011 0010 1010 1101 0001 0100 1011

altogether

A. Addition

B. Subtraction

C. Multiplication

D. Division

4251

0011 0010 1010 1101 0001 0100 1011

Let’s Practice

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

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

4251

0011 0010 1010 1101 0001 0100 1011

Match Time!

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.