Multiplication Multiplication
Multiplying by 0’s
Anything x a cheerio = a cheerio
Example:
45 x 0 = 00 x 5 = 01,890 x 0 = 0
Multiplying by 1’s
When you look in the mirror what do you see? I see a number looking back at me.
Example
5 x 1 = 5345 x 1 = 345
The mirroris the one!
Multiplying by 2’sWhen multiplying by 2’syou circle the other numberand double it.
Example
4 x 2 = 8 8 x 2 = 16 2 x 7 = 14
Multiplying by 3’s3, 6, 9,…12, 15, 18,…21, 24, 27,…30
Multiplying by 4’s
You have to be 16 todrive a 4 by 4.
4 x 4 = 16
• What two numbers come before 3 and 4 ____ _____
• 3 x 4 = 12
3 of the fours you have to memorize
• 4 x 6 = 24
• 4 x 7 = 28
• 4 x 8 = 32
Multiplying by 5’s
When multiplying by 5 pretend thata 5 is in the center of the clock. So if5 is in the center and the long hand ison the 4…it is 20 after.
If the long hand is on the 8 it is 40 after.
Multiplying by 6’sA little girl lived inClinton and a little boy lived in Vicksburg.They loved to talk on the phone. From Clinton to Vicksburg it is 36 miles.
6 x 6 = 36
The 6 looks like a phone.
There is a 6 story building and a 7 storybuilding and they are located on 42nd street inNew York city.
6 x 7 = 42
Multiplying by 7’s
There was a football player who in high school was all state. He wore the number 7.He went on to play in college and won the Heisman.He continued to wear the number 7.After graduating from collegehe was drafted into the prosby the San Francisco 49ners.
7 x 7 = 49ners
• What 2 numbers come before 7 and 8 ____ _____
• 7 x 8 = 56
Multiplying by 8’s
He eight and eight and got sick on the floor. Theanswer is 64.
8 x 8 = 64
Multiplying by 9’s
TRICK 9
Example:9 x 5 = Trick 9…take one awayfrom 5 is 4…9 - 4= 5…45
9 x 8 = Trick 9…take one awayFrom 8 is 7…9 – 7 = 2…72
Multiplying by 10’s
When multiplying by 10’sthe one sees itself and thezero is a cheerio!
Example5 x 10= the one sees a 5 and put down a cheerio = 50
Multiplying by 11’s
When multiplying by 11 you are seeing doubles. Ex. 5 x 11 =55
