Multiplying Whole Numbers...

What is multiplication???

33 students in this class. Mrs. McQuarrie will give them 197 math tests this year. How many math tests in total will Mrs McQuarrie have to mark?

How do we solve this question?

33 students in this class. Mrs. McQuarrie will give them 197 math tests this year. How many math tests in total will Mrs McQuarrie have to mark?

1. Understand the question – what is it asking?

33 students in this class. Mrs. McQuarrie will give them 197 math tests this year. How many math tests in total will Mrs McQuarrie have to mark?

1. Understand the question – what is it asking?2. What is the best way to approach this question?

33 students in this class. Mrs. McQuarrie will give them 197 math tests this year. How many math tests in total will Mrs McQuarrie have to mark?

1. Understand the question – what is it asking?2. What is the best way to approach this question?3. How should we write this question mathematically?

33 students in this class. Mrs. McQuarrie will give them 197 math tests this year. How many math tests in total will Mrs McQuarrie have to mark?

1. Understand the question – what is it asking?2. What is the best way to approach this question?3. How should we write this question mathematically?

197 x 33

33 students in this class. Mrs. McQuarrie will give them 197 math tests this year. How many math tests in total will Mrs McQuarrie have to mark?

1. Understand the question – what is it asking?2. What is the best way to approach this question?3. How should we write this question mathematically?

197 X 33

4. How do I want to solve this problem?

Option 1: model the problem

33

197

Use place value to break down the problem

30

100 90 7

3

30x100=3000 30x90=2700 30x7=210

3x100=300 3x90=270 3x7=21

Add the products to find the total:3000+2700+210+300+270+21=6501

Option 2: short method

1 9 7x 3 3

Keep it Neat!!!

There are 576 rows in the concert hall. Each row has 28 seats. The concert is sold out – how many tickets did they sell?

Solve both ways!

Finished? Find a 3 digit number and a 2 digit number whose product is between 8000 and 9000.

Do the same for a product between 60000 and 70000