Glencoe Mathematics Applcations and Concepts: Florida Edition Course 1 p.10-13; Course 2 p. 554; Pre-Algebra 4.1 p.148-152
Knowing these tricks for deciding whether a number can be divided by another number (factor) or not will help you when we do factoring and need to find the least common multiple (LCM) and greatest common factor (GCF) of two or more numbers.
Class Handouts:
Another version with rules from 0 to 12 with an accompanying worksheet.
Divisibility Rules 1 -12 Plus Worksheet
This PowerPoint shows the divisibility rules for numbers from 1 to 10:
Can I divide this number by that number
Can I Divide This Number by That Number
This cartoon is fun to watch! It shows the rule for seeing if a number can be evenly divided by 11. Something you don’t have on your sheet!
Remember, start by subtracting the first digit from the second. It’s kind of like the rule for the 3 and the 9, only it goes – + – +
This video shows how to use all of the divisibility rules from 2 to 10! It’s really good.
Another video that shows divisibility rules 2, 3, 4, 5, 6, and 9.
This video shows a teacher explaining how to use the rules for 3 and for 9.
This video shows a teacher explaining how to use the divisibility rule for 6. I think you’ll like it:
Is a number divisible by 10?

