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Multiplication lesson 1PowerPoint Presentation

Multiplication lesson 1

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### Multiplication lesson 1

Multiplying by 0 and 1

Multiplication vocabulary

- Before we learn how to multiply, there are some important vocabulary words to know and understand...
- Multiplication: An operation that gives the totalnumber when you join equalgroups.
Example: 4 + 4 + 4 + 4 = 16 or 4 x 4 = 16

- Factors: Numbers that are multiplied to give a product.
Example: 3 x 2 = 6 (3 and 2 are factors)

- Product: The answer to a multiplicationproblem.
Example: 5 x 2 = 10 (10 is the product)

Multiplication vocabulary continued

- Array: An array is a set of objects or numbers arrangedinorder, often in rows & columns.
Example:

Multiplication Factsare easiest to learn when...

- You find patterns.
Example: 2 x 7 = 14 can be found by counting by twos 2, 4, 6, 8, 10, 12, 14

- You use rhymes.
Example: 7 and 7 are doing fine, 7 times 7 is 49; 8 and 4 were sad and blue, 8 times 4 is 32

- You use stories.
Example: 7’s Tall Stories http://illuminations.nctm.org/Lessons/3-5/times6times7/SevensTallTales.mp3

- You use songs:
Example: School House Rock Multiplication Rock http://www.schoolhouserock.tv/Multiplication.html

How to multiply by zero (0)

- Rule: Any number times zero is alwayszero!
Zero Times Table

- 0 x 0 = 0
- 0 x 1 = 0 1 x 0 = 0
- 0 x 2 = 0 2 x 0 = 0
- 0 x 3 = 0 3 x 0 = 0
- 0 x 4 = 0 4 x 0 = 0
- 0 x 5 = 0 5 x 0 = 0
- 0 x 6 = 0 6 x 0 = 0
- 0 x 2 365 778 = 0

3 x 0 =

5 x 0 =

0 x 9 =

0 x 6 =

0 x 0 =

4 x 0 =

1 x 0 =

0

0

0

0

0

0

0

0

Now let’s practice the zero times tablesGet your pencil ready and answer the following questionsHOW TO MULTIPLY BY ONE (1)

- Rule: One times any number is the samenumber
- Groups: There is only one group
Example: 1 x 5 = 5, one group of 5 is 5

- Arrays: 3 rows of 1 is 3 1 row of 3 is 3
Example: 3 x 1 = 3 1 x 3 = 3

3 x 1 =

1 x 1 =

1 x 7 =

1 x 0 =

12 x 1 =

6 x 1=

1 x 4 =

5

3

1

7

0

12

6

4

Now let’s practice the one times tablesGet your pencil ready and answer the following questions
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