Divisibility rules

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Divisibility rules

  1. 1. Divisibility RulesHow do we know when we candivide one number into anotherexactly?Jenny Russell
  2. 2. Divisibility Rules (2)A number can bedivided by 2 ifthe last digit is even
  3. 3. Divisibility Rules (3)a number is divisibleby 3 ifthe sum of the digits is3, 6 or 9
  4. 4. Divisibility Rules (4)a number is divisibleby 4 ifthe number made bythe last two digits canbe divided by 4
  5. 5. Divisibility Rules (5)A number is divisibleby 5 ifthe last digit is a 5 or a0
  6. 6. Divisibility Rules (6)A number can bedivided by 6 ifthe last digit is evenand the sum of all thedigits is 3, 6 or 9
  7. 7. Divisibility Rules (8)A number is divisibleby 8 ifthe number made bythe last three digitswill be divisible by 8
  8. 8. Divisibility Rules (9)A number is divisibleby 9 ifthe sum of all thedigits will add to 9
  9. 9. Divisibility Rules (10)A number can bedivided by 10 ifthe last digit is a 0
  10. 10. Divisibility RulesA number can bedivided by 7 if……………… canyou find a rule?
  11. 11. Divisibility Rules2, the last digit will be an even number3, all the digits will add to 3,6 or 94, the number made by the last two digitscan be divided by 45, the last digit will be a 5 or 0
  12. 12. Divisibility Rules6, the last digit will be even and the digitswill add to 3, 6 or 98, the number made by the last three digitswill be divisible by 8
  13. 13. Divisibility Rules9, the sum of the digits will be 910, the last digit will be a 0There is no easy test for 7, although somemethods have been invented, however it iseasier to use a pencil and paper method.
  14. 14. Divisibility RulesApply these rules to theses numbers:74,673,042444,555,44861,616,168732,51066,666,666179,131,590

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