 | Daniel W. Fish - Arithmetic - 1883 - 374 pages
...by 3. 6. By 8, when its three right-hand figures are ciphers, or express a number divisible by 8. 7. By 9, when the sum of its digits is divisible by 9. 8. By 10, when it ends with one or more ciphers. Find by inspection some of the exact divisors of the... | |
 | Daniel W. Fish - Arithmetic - 1883 - 364 pages
...by 3. i. By 8, when its three right-hand figures are ciphers, or express a number divisible by 8. 7. By 9, when the sum of its digits is divisible by 9. 8. By 10, when it ends with one or more ciphers. Find by inspection some of the exact divisors of the... | |
 | Daniel W. Fish - Arithmetic - 1883 - 358 pages
...ciphers, or express a number divisible by 8. 5. By G, when it is an even number and divisible by 3. 7. By 9, when the sum of its digits is divisible by 9. 8. By 10, when it ends with one or more ciphers. Find by inspection some of the exact divisors of the... | |
 | John Bascombe Lock - Arithmetic - 1891 - 400 pages
...itself divisible by that factor. Example. 1160 is divisible by 8, since 160 is divisible by 8. *60. A number is divisible by 9 when the sum of its digits is divisible by 9, and not otherwise. For let the number be 875426. Then, since 100000-1, or 99999, is divisible by 9,... | |
 | Middlesex Alfred Bailey - Arithmetic - 1892 - 174 pages
...denoted by its last three digits is divisible by 8. By 3, when the sum of its digits is divisible by 3. By 9, when the sum of its digits is divisible by 9. By 11, when the difference between the sum of its digits in the odd places and the sum of its digits... | |
 | Middlesex Alfred Bailey - Arithmetic - 1892 - 170 pages
...denoted by its last three digits is divisible by 8. By 3, when the sum of its digits is divisible by 3. By 9, when the sum of its digits is divisible by 9. By 11, when the difference between the sum of its digits in the odd places and the sum of its digits... | |
 | Middlesex Alfred Bailey - Arithmetic - 1892 - 176 pages
...denoted by its last three digits is divisible by 8. By 3, when the sum of its digits is divisible by 3. By 9, when the sum of its digits is divisible by 9. By 11, when the difference between the sum of its digits in the odd places and the sum of its digits... | |
 | John Henry Walsh - Arithmetic - 1893 - 264 pages
...by 2 ? By 5 ? A number is divisible by 3 when the sum of its digits (figures) is divisible by 3 ; it is divisible by 9, when the sum of its digits is divisible by 9. A number is divisible by 4, when the number expressed by its last two figures is divisible by 4. When... | |
 | John Henry Walsh - Arithmetic - 1893 - 264 pages
...by 2 ? By 5 ? A number is divisible by 3 when the sum of its digits (figures) is divisible by 3 ; it is divisible by 9, when the sum of its digits is divisible by 9. A number is divisible by 4, when the number expressed by its last two figures is divisible by 4. When... | |
 | John Henry Walsh - Arithmetic - 1894 - 266 pages
...by 2 ? By 5 ? A number is divisible by 3 when the sum of its digits (figures) is divisible by 3 ; it is divisible by 9, when the sum of its digits is divisible by 9. A number is divisible by 4, when the number expressed by its TO two figures is divisible by 4. When... | |
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Any number is divisible by 9, when the sum of its digits is divisible by 9; 
