Factors, multiples and patterns

Heads up! This course may be archived and/or unavailable.

This course is a part of 4th grade, a 17-course Topic series from Khan Academy.

We know that 3x2x5 = 30. So 2, 3, and 5 are factors of 30. 30 is a multiple of each of 3, 2, and 5. If a number only has itself and 1 as factors, then the number is "prime". Don't worry, this is explained in much more depth in the tutorials in this topic. We will also explore some mathematical patterns.

This course contains 3 segments:

Factors and multiples

In this tutorial, we'll begin to think about the numbers that "make up" the number. This will be useful throughout our study of math. Whether we are adding fractions, exploring mystical number patterns, or breaking computer codes, factoring numbers are key! Let's go, kids! Common Core Standard: 4.OA.B.4

Prime and composite numbers

Prime numbers have been studied by mathematicians and mystics for ages (seriously). They are both basic and mysterious. The more you explore them, the more you will realize that the universe is a fascinating place. This tutorial will introduce you to the magical world of prime numbers as well as their composite number brethren. Common Core Standard: 4.OA.B.4

Math patterns

Let's now use our mathematical toolkit to discover and make use of patterns! This is a seriously fun tutorial.