Our very first unit of the school year is a quick one that focuses on reviewing key number sense concept they would have learned in grades 5 and 6. These concepts will be very helpful to them when we begin our next unit (fractions, decimals, and percents).

Prime and Composite numbers

• • Here is a short video explaining prime and composite numbers

  • Here is a chart showing all the prime and composite numbers from 1-100 (try and see if you can memorize the prime numbers, it's very helpful to know them!)

  • Here is a practice worksheet for prime and composite numbers

Factors and Multiples (know what they are and how to identify them)

• • Here is a short video explaining factors and multiples if you need a refresher!

  • Here is a practice worksheet on factors and here is one for multiples

Greatest Common Factor (GCF) and Lowest Common Multiple (LCM)

GCF

• Here is a video explaining how to find the greatest common factor (GCF) using the ladder method.

• Here are some practice problems

LCM 

• Here is a video showing how to find the least/lowest common multiple (LCM)

• Here are some practice problems

Here is a video explaining how to find BOTH the GCF and LCM of two numbers 

Long division

• • Here is a video explaining the steps of long division

  • Here is a practice worksheet on long division