Divisibility Rules Crossword Puzzle
Plus Printable Rules Sheet and Divisibility Quizzes
| divisibility_rules_1-10.doc |
| divisibility_rules_crossword_puzzle.pdf |
| divisibility_rules_crossword_puzzle_solution.pdf |
| divisibility_rules_crossword_puzzle_2.pdf |
| divisibility_rules_crossword_puzzle_solution_2.pdf |
| divisibility_rules_crossword_puzzle_3.pdf |
| divisibility_rules_crossword_puzzle_solution_3.pdf |
| true_or_false_divisibility_quiz_1.doc |
| true_or_false_divisibility_quiz_answers_1.doc |
| true_or_false_divisibility_quiz_2a.doc |
| true_false_divisibility_quiz_answers_2.doc |
| true_or_false_divisibility_quiz_3.doc |
| true_or_false_divisibility_quiz_answers_3.doc |
Divisibility Rules 1-10
A number is divisible by 2 if the last digit is 0, 2, 4, 6, 8.
A number is divisible by 3 if the sum of the digits is divisible by 3.
A numbe is divisible by 4 if the last two digits make a number that is divisible by 4.
A number is divisible by 5 if the last digit is 0 or 5.
A number is divisible by 6 if the number is divisible by 2 and 3.
Divisibility test for 7: Double the last number of the number. Then subtract that number from the remaining number (the number without the one you just doubled). If that number is divisible by 7, then so is the original number you were testing. Ex. 357 Double the 7 and get 14. Subtract 14 from 35 and you get 21. 21 is divisible by 7 therefore so is 357.
A number is divisible by 8 if the last three numbers make a number that is divisible by 8.
A number is divisible by 9 if the sum of the digits is divisible by 9.
A number is divisible by 10 if the last number is 0.
