Unit 1: The Number System - Multiply/Divide Fractions (Factors/Multiples)

Prime and Composite Numbers....check out the videos to help you remember.

Prime numbers - a number that one has 2 factors, 1 and itself!

Composite numbers - a number that has more than 2 factors.

Factors and Multiples!

A FACTOR is a whole number that divides evenly into a whole number. The numbers you multiply together to get the product in a multiplication problem.

GCF - Greatest Common Factor - the common factor of two or more numbers that has the greatest value.

A MULTIPLE is the product of a whole number and any whole number. The multiples of a number you can get from skip counting by the number.

LCM - Least Common Multiple - the common multiple of two or more numbers that has the least value.

Dividing Fractions!!! - Keep, Change, Flip!!!

Multiply and Divide Decimals.....check out my decimals website!!! https://sites.google.com/wcsdny.org/decimals5thgrade/home