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DIVISIBILITY RULES

DIVISIBILITY RULES. the number ends in 0, 2, 4, 6, or 8. 2. 3. the sum of the number's digits is divisible by 3. the number formed by its last two digits is divisible by 4. 4. 5. the number ends in 0 or 5. 6. the number is also divisible by 2 and 3. 9.

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DIVISIBILITY RULES

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  1. DIVISIBILITY RULES

  2. the number ends in 0, 2, 4, 6, or 8 2 3 the sum of the number's digits is divisible by 3 the number formed by its last two digits is divisible by 4 4 5 the number ends in 0 or 5 6 the number is also divisible by 2 and 3 9 the sum of the number's digits is 9 10 the number ends in 0 A number is divisible by: If...

  3. Dividing by 2 Check the Division(Use the following page to show your work) What is the last digit? According to the rule, should it be divisible by2? Number 1 3 4 268 Yes 8 2 268 2 0 6 6 0 8 8 0 131 2 131 172 2 172 149 2 149 566 2 566 RULE: If a number ends in 0, 2, 4, 6, or 8, it is divisible by 2.

  4. Show your work on this page.

  5. Dividing by 3 Sum of the digits According to the rule, should it be divisible by 3? Check the Division(Use the following page to show your work) Number Yes 2 5 7 7+7+1= 15 771 771 3 - 6 1 7 - 15 2 1 2 1 0 390 3 390 262 3 262 174 3 174 512 3 512 RULE: If the sum of a number's digits is divisible by 3, then the number itself is divisible by 3.

  6. Show your work on this page.

  7. Check the Division(Use the following page to show your work) According to the rule, should it be divisible by 4? Last two digits Number 2 3 128 28 Yes 128 4 12 0 8 8 0 0 263 4 263 4 416 416 4 644 644 4 139 139 Dividing by 4 RULE: If the number formed by the last two digits is divisible by 4, then the number itself is divisible by 4.

  8. Show your work on this page.

  9. Check the Division(Use the following page to show your work) What is the last digit? According to the rule, should it be divisible by 5? Number 5 0 Yes 250 0 5 250 25 000 0 0 75 5 75 362 5 362 855 5 855 120 5 120 Dividing by 5 RULE: If a number ends in 0 or 5, then the number is divisible by 5.

  10. Show your work on this page.

  11. Check the Division(Use the following page to show your work) According to the rule, should it be divisible by 6? Is the number divisible by 2 and 3? Number Yes Yes 258 4 3 6 258 129 24 2 258 18 18 86 0 3 258 125 6 125 246 6 246 576 6 576 374 6 374 Dividing by 6 RULE: If a number is divisible by 2 and 3, then it is also divisible by 6.

  12. Show your work on this page.

  13. Check the Division(Use the following page to show your work) According to the rule, should it be divisible by9? Sum of the digits Number 7 Yes 6+3=9 63 9 63 63 0 225 9 225 Dividing by 9 177 9 177 563 9 563 621 9 621 RULE: If the sum of a number's digits is 9, then the number is divisible by 9.

  14. Show your work on this page.

  15. Check the Division(Use the following page to show your work) According to the rule, should it be divisible by 10? What is the last digit? Number 120 0 Yes 1 2 10 120 10 20 20 0 390 10 390 265 10 265 174 10 174 852 10 852 Dividing by 10 RULE: If a number ends in 0, then it is divisible by 10.

  16. Show your work on this page.

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