Divisibility Rules
Kimberly Jessica
6
Ex:
1. 12. 12 is divisible by 2 and 3. 12 / 3 = 4. 12 / 2 = 6
2. 24. 24 is divisible by 2 and 3. 24 / 2 = 12. 24 / 3 = 8
3. 664. 664 is divisible by 2 but not 3. 664 / 2 = 332. 664 / 3 = 221 R 1.
9
Ex:
1. 5643. 5+6+4+3= 18/9=3. Good
2. 333. 3+3+3= 9/9= 1. Good
3. 721. 7+2+1= 10/9=1 R1. Bad
Divisibility Rules
2
Ex:
1. 1000 / 2= 500
2. 224 / 2 = 112
3. 668 / 2 = 334
3
Ex:
1. 36 3 + 6 = 9 / 3 = 3 ( it's divisible by 3.)
2. 65 6 + 5 = 11 / 3 = 3,R 2 ( it's not divisible by 3.)
3. 90 9 + 0 = 9 / 3 = 3 ( it's divisible by 3.)
4
Ex:
1. 348 48 / 4 = 12 Good
2. 223. 23 / 4 = 5 R3. Bad
3. 144. 44 / 4 = 11. Good
Divisibility Rules
5
Ex:
1. 60. 60 ends in 0 so it can be divided by 5.
2. 75. 75 ends in 5 so it can be divided by 5
3. 33. 33 ends in 3 so it can not be divided by 5.
10
Ex:
1. 50 50 ends in 0 so it can be divided by 10.
2. 21. 21 ends in 1 so it can't be divided by 10.
3. 3000. 3000 ends in 0 so it can be divided by 10.