Divisibility Rules
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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2 | Even number
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3 | The sum of the digits is divisible by 3
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4 | The last 2 digits are divisible by 4
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5 | The last digit is 0 or 5
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6 | The number is divisible by both 2 and 3
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7 | If you double the last digit and subtract it from the rest of the number and the answer is:
0 or divisible by 7
(May be easier to just divide by 7)
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8 | The last three digits are divisible by 8
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9 | The sum of the digits is divisible by 9
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10 | The Number ends in 0
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11 | Add and subtract digits in an alternating pattern (add first, subtract second, add third, etc). Then the answer must be:
0 or divisible by 11
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12 | The number is divisible by both 3 and 4
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
code777
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