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Divisibility Rules

Divisibility Rules. A number divides by…. 2 if the LAST number is even! 3 if you ADD the numbers up and THAT number divides by 3!. 104 1,032,463,042!. 24 (2+4=6) 162 (1+6+2=9). A number divides by…. 4 if the last TWO numbers divide by 4! 5 if the LAST number is 5 or 0!. 324

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Divisibility Rules

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  1. Divisibility Rules

  2. A number divides by… 2 if the LAST number is even! 3 if you ADD the numbers up and THAT number divides by 3! 104 1,032,463,042! 24 (2+4=6) 162 (1+6+2=9)

  3. A number divides by… 4 if the last TWO numbers divide by 4! 5 if the LAST number is 5 or 0! 324 5,748 25 110 12,370

  4. A number divides by… 6 if it ALSO divides by 2 AND 3! *The rules for 7 & 8 are CRAZY!!??* 42 (4+2=6) 168 (1+6+8=15)

  5. A number divides by… 9 if you ADD all the numbers and the sum divides by 9! 10 if the last number is 0 81 (8+1=9) 1,629 (1+6+2+9=18) 20 460 8,145,783,215,825,632,936,850

  6. Use these rules to make simplifying fractionseasy!!!

  7. 6 9 2 3 ÷ 3 =

  8. 5 25 1 5 ÷ 5 =

  9. 16 44 4 11 ÷ 4 =

  10. 21 35 3 5 ÷ 7 =

  11. 48 78 8 13 ÷ 6 =

  12. 28 96 7 14 ÷ 4 =

  13. 9 21 3 7 ÷ 3 =

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