What should you think when you solve a math problem?

What should you think when you solve a math problem?

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Today we are learning about what you should think when you are solving a math problem because....

• What you think, is what you do

• There are strategies that you can try even if you don't know what to do

What should you think?

• First, read the problem and identify the key information bu underlining.

• Second try to get a picture in your head of what is happening.

• If you can't picture it, draw it on your paper.

• Based upon what is happening decide if you are multiplying, dividing, subtracting, and adding.

• Once you complete the problem ask yourself, "Is my answer reasonable?"

Multiple Select

What is the key information in this problem: Sam went to the store and bought 5 shirts for $14.95 each. He paid with a $100.00 bill. Not including tax, how much change should he get?

• Sam went to the store

• He bought 5 shirts

• They are $14.95 each

• He paid with $100.00 Bill

• How much change should he get?

Open Ended

What should you do when you see key information?

Open Ended

How do you know if something is 'key information' in the problem?

Open Ended

What do you picture in your head for this problem: Sam went to the store and bought 5 shirts for $14.95 each. He paid with a $100.00 bill. Not including tax, how much change should he get?

How do you know how many steps there are in the problem?

• Every time you have to complete an operation there is a step.

• The operations are add, subtract, multiply, and divide.

• Converting is also a step. Convert means convert a fraction, percent, decimal.

• Reducing is also a step. Reducing a fraction means you are changing to it's most simple form.

Multiple Choice

How many steps (operations) does this problem have? : Sam went to the store and bought 5 shirts for $14.95 each. He paid with a $100.00 bill. Not including tax, how much change should he get?

• 1

• 2

• 3

Multiple Choice

What is the first step: Sam went to the store and bought 5 shirts for $14.95 each. He paid with a $100.00 bill. Not including tax, how much change should he get?

• 5 x $14.95

• Divide $14.95 by 5

• $14.94 + 5

• Subtract $14.95 from 5

Open Ended

Why do you have to multiply $14.95 x 5 first?

Fill in the Blanks

$14.95 x 5 is...

Multiple Choice

What is the second step? Sam went to the store and bought 5 shirts for $14.95 each. He paid with a $100.00 bill. Not including tax, how much change should he get?

• $100 / $74.75

• $100 + $74.75

• $100 x $74.75

• $100- $74.75

Open Ended

Why do you do $100- $74.75?

Fill in the Blanks

What is $100- 74.75?

Open Ended

What if in your second step you chose to do $100 x $74. 75? You would have gotten $7,475. Is this answer reasonable? Why or why not?

Multiple Choice

Did you have to convert or reduce anything in this problem?

• yes

• no

What should you think?

• First, read the problem and identify the key information bu underlining.

• Second try to get a picture in your head of what is happening.

• If you can't picture it, draw it on your paper.

• Based upon what is happening decide if you are multiplying, dividing, subtracting, and adding.

• Once you complete the problem ask yourself, "Is my answer reasonable?"

Open Ended

What are three things you should do for math word problems?

Multiple Choice

Solve: Mandy wanted to buy some candy. She has $20.00. She wants to buy 10 pieces of Reece's for $2.30 each. Does she have enough money?

• Yes

• No

• $40.60

• $23.00

Multiple Select

To solve a math problem, what should you do?

• Underline/ highlight key information

• Picture the problem in your head

• Decide what operations you need to complete

• Decide if you need to convert or reduce anything

• Decide if your answer is reasonable