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DIVISIBILITY RULES
RULE 2 LAST DIGIT EVEN
(= 0,2,4,6 OR 8)
EX. 3,489,076: Last digit = 6 6 = 3 x 2
RULE 3 Add up all the digits in the
number Repeat until sum is 2-digits 2-
digits divisible by 3
16,499,205,854,376:
1+6+4+9+9+2++0+5+8+5+4+3+7
+6= 69 6+9=15 15 = 5 x 3
RULE 4 Last two digits divisible by 4 2. Tens
digit even and ones digit = 0, 4 or 8 Tens digit
odd and ones digit = 2 or 6
358,912: 1. Last 2 digits = 12
12 = 3x4 2. tens digit =1, odd &
ones digit = 2
5 Last digit = 5 or 0
3,783,953,495:
Last digit = 5

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Divisibility rules ppt

  • 1. DIVISIBILITY RULES RULE 2 LAST DIGIT EVEN (= 0,2,4,6 OR 8) EX. 3,489,076: Last digit = 6 6 = 3 x 2
  • 2. RULE 3 Add up all the digits in the number Repeat until sum is 2-digits 2- digits divisible by 3 16,499,205,854,376: 1+6+4+9+9+2++0+5+8+5+4+3+7 +6= 69 6+9=15 15 = 5 x 3
  • 3. RULE 4 Last two digits divisible by 4 2. Tens digit even and ones digit = 0, 4 or 8 Tens digit odd and ones digit = 2 or 6 358,912: 1. Last 2 digits = 12 12 = 3x4 2. tens digit =1, odd & ones digit = 2
  • 4. 5 Last digit = 5 or 0 3,783,953,495: Last digit = 5