Monday, September 14, 2009

Patterns In Division

Happy Monday!

Today in class, we looked at patterns in division. We learned that there are tips and tricks to help us figure out if humongous numbers are divisible by 2, 3, 4, 5, 6, 8, 9, or 10.

USE THE GUIDE IN YOUR HOMEWORK BOOKS TO HELP YOU!

What I've noticed after marking your school notebooks is some of you are confusing how to solve for divisible by 4 with divisible by 5.

For numbers divisible by 3, the SUM of the digits will be divisible by 3.

Example: 1962 has a digit sum of 18 (1+9+6+2=18). We know that 18 divided by 3 equals 6, so 1962 is divisible by 3.

For numbers divisible by 4, the number represented by the tens and ones digits will be divisible by 4.

Example: 1962 has 62 as the number represented by the tens and ones digits. 62 cannot be divided by 4, therefore 1962 is not divisible by 4.

Questions? Post them here!

See you tomorrow, my little mathematicians!

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