Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Number Theory
Common Factors and Number Tricks/Patterns
| Question | Answer |
|---|---|
| How do you find out if a number is a multiple of 2? | If the number ends in a even number. ex: 226 |
| How do you find out if a number is a multiple of 3? | If the sum of all of the numbers is a multiple of 3. ex: 18 1+8=9/3=3 |
| How do you find out if a number is a multiple of 4? | If the last two numbers are a multiple of 4. ex: 564 |
| How do you find out if a number is a multiple of 5? | If the number ends in 5 or 0. ex: 65 |
| How do you find out if a number is a multiple of 6? | If a number is is a multiple of 2 and 3. ex:6 |
| How do you find out if a number is a multiple of 7? | You work it out on your own. (no trick) |
| How do you find out if a number is a multiple of 8? | If the last three numbers are a multiple of 8. ex: 1800 |
| How do you find out if a number is a multiple of 9? | If the sum of the numbers are a multiple of 9. ex: 27 |
| How do you find out if a number is a multiple of 10? | If the number ends in zero. ex: 30 |
| What are the factors of 36? | 1,36,2,18,3,12,4,9,6 |
| What are the factors of 45? | 1,45,3,15,5,9, |
| What are the factors of 18? | 1,18,2,9,3,6 |
| What are the factors of 50? | 1,50,2,25,5,10 |
| What are the factors of 110? | 1,110,2,55,5,22,10,11 |
Created by:
mporterfield3
Popular Math sets