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10 Cards in this Set
- Front
- Back
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2 : number is divisible
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number is divisible by 2 if its last digit is divisible by 2 or an even number
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3 : number is divisible
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number is divisible by 3 if the sum of its digits is divisible by 3
4317 = 4+3+1+7 =15 |
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5 : number is divisible
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number is divisible by 5 if its last digit is 0 or 5
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4 : number is divisble
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number is divisible by 4 if its last two digits are divisible by 4
1748 48/4 |
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6: number is divisible
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number is divisible by 6 if its divisible by both 2 (even) and 3 (sum of digtis divisible by 3)
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7: number is divisible
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double the last digit and subract from the rest if divisible by 7
392 = 39 -4 = 35 259 = 25 - 18 =7 |
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8: number is divisible
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if the number is divisible by 2 three times
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9: number is divisible
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number is divisible by 9 if the sum of its digits is divisible by 9
22,428 = 2+2+4+2+8=18 |
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1%
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move left 2 digits
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10%
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move left 1 digit
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