Multiplication 3 x 3 = 9 4 x 8 = 32 1 x 6 = 6 6 x 5 = 35

If Amy had 3 cats and each one had 4 legs, how could we find how many legs all the cats had?

=4 legs =12 legs +

Another way to figure out the answer is to multiply. Multiplication is a fast way to add equal numbers. Since all 3 cats have 4 legs, instead of adding them together, we could multiply.

4 legs 3 cats 12 legs X

Multiplication Facts are easiest to learn when... YouYou find patterns. use rhymes. use stories. relate them to what you already know. CheckCheck out a few examples!

0x 3 = 0 0x 7 = 0 0x 4 = 0 0x 1 = 0 0x 0 = 0 0x 9 = 0 Zero Pattern 0 times any number is 0

Ones Pattern 1 times any number is the same number 1x 3 = 3 1x 7 = 7 1x 4 = 4 1x 1 = 1 1x 2 = 2 1x 9 = 9

Twos Pattern 2 times any number is that number doubled 2x 3 = 6 2x 7 = 14 2x 4 = 8 2x 1 = 2 2x 2 = 4 2x 9 = 18

We can also use multiplication to find the total number in this set without having to count them.

3 x 6 =

Multiplication Vocabulary Check out some vocabulary on the next slide

Product The answer to a multiplication problem. Factor A number that is multiplied by another number to find a product. Ex: 4 x 6 = 24, 4 and 6 are factors of 24 Multiply - The act of finding the total number of items in a given number of groups when each group contains the same number of items. It is a short cut for addition. Array An arrangement that shows objects in rows and columns. **** **** **** 4 Example: 3 x 4 = 12 3

Vocabulary continued Set -a group of items. Times - to multiply. Multiple - the product of a whole number and any other number Ex: the multiples of 3 are 3, 6, 9, 12, 15. **** ****

If a crayon box holds 7 crayons, how many crayons would 2 boxes hold?

Can you think of a multiplication problem that shows this?

2 boxes 7 crayons 14 crayons X