multiplication. multiplying by 0’s anything x a cheerio = a cheerio example: 45 x 0 = 0 0 x 5 = 0...

Download Multiplication. Multiplying by 0’s Anything x a cheerio = a cheerio Example: 45 x 0 = 0 0 x 5 = 0 1,890 x 0 = 0

Post on 13-Dec-2015

216 views

Category:

Documents

2 download

Embed Size (px)

TRANSCRIPT

  • Slide 1

Multiplication Slide 2 Multiplying by 0s Anything x a cheerio = a cheerio Example: 45 x 0 = 0 0 x 5 = 0 1,890 x 0 = 0 Slide 3 Multiplying by 1s When you look in the mirror what do you see? I see a number looking back at me. Example 5 x 1 = 5 345 x 1 = 345 The mirror is the one! Slide 4 Multiplying by 2s When multiplying by 2s you circle the other number and double it. Example 4 x 2 = 8 8 x 2 = 16 2 x 7 = 14 Slide 5 Multiplying by 3s 3, 6, 9,12, 15, 18,21, 24, 27,30 Slide 6 Multiplying by 4s You have to be 16 to drive a 4 by 4. 4 x 4 = 16 Slide 7 What two numbers come before 3 and 4 ____ _____ 3 x 4 = 12 Slide 8 3 of the fours you have to memorize 4 x 6 = 24 4 x 7 = 28 4 x 8 = 32 Slide 9 Multiplying by 5s When multiplying by 5 pretend that a 5 is in the center of the clock. So if 5 is in the center and the long hand is on the 4it is 20 after. If the long hand is on the 8 it is 40 after. Slide 10 Multiplying by 6s A little girl lived in Clinton 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 story building and they are located on 42 nd street in New York city. 6 x 7 = 42 Slide 11 Multiplying by 7s 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 college he was drafted into the pros by the San Francisco 49ners. 7 x 7 = 49ners Slide 12 What 2 numbers come before 7 and 8 ____ _____ 7 x 8 = 56 Slide 13 Multiplying by 8s He eight and eight and got sick on the floor. The answer is 64. 8 x 8 = 64 Slide 14 Multiplying by 9s TRICK 9 Example: 9 x 5 = Trick 9take one away from 5 is 49 - 4= 545 9 x 8 = Trick 9take one away From 8 is 79 7 = 272 Slide 15 Multiplying by 10s When multiplying by 10s the one sees itself and the zero is a cheerio! Example 5 x 10= the one sees a 5 and put down a cheerio = 50 Slide 16 Multiplying by 11s When multiplying by 11 you are seeing doubles. Ex. 5 x 11 =55

Recommended

View more >