Worked example of basic divisibility tests
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/factors-multiples/divisibility_tests/e/divisibility_tests?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/factors-multiples/divisibility_tests/v/recognizing-divisibility?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra
Missed the previous lesson?
Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!
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1. Is 3,652 divisible by 2? (00:00:59)
2. Is 30, 321 divisible by 3? (00:02:56)
3. How can you check to see if a number is divisible by 4? (00:04:00)
4. Is 1,320 divisible by 5? (00:04:25)
5. If a number is only divisible by 2, can it be divisible by 6? (00:05:04)
6. Is 369 divisible by 9? (00:05:56)
7. Is 1,205,450 divisible by 10? (00:06:32)
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