In 5th grade, it is essential that all students become fluent in their multiplication facts through 12. Readily knowing multiplication facts, and in turn division facts, will allow students to more clearly understand math concepts and become more efficient in solving problems.
However, many students can lose their fluency of addition and subtraction facts which slows down their ability to complete a problem efficiently. Below is a great way to practice their addition and subtraction facts as well as multiplication and division facts:
Below are websites that can be used to practice: facts:
Multiplication & Division Online Games
Multiplication & Division Printable Pages
Factor sets are simply the sets of multiplication facts that can be used to create a particular number. These can then be used to determine if a number is prime or composite.
The multiplication facts for 12 are
1 x 12 12 x 1 2 x 6 6 x 2 3 x 4 4 x 3
These factors can then be organized into a list or a T-chart. Each factor will be listed only once.
List: 1, 2, 3, 4, 6, and 12
A number is composite if it can be made using factor sets other than one and itself, so 12 is a composite number.
Here are some more examples of factor sets listed in T-charts.