 | Charles Austin Hobbs - 1889 - 370 σελίδες
...digits is divisible by 3. For example, in 741, 7 + 4 + 1 = 12, which ^s divisible by 3 ; hence 74}. is divisible by 3, (3) A number is divisible by 4 if the two right-hand figures are zeros, or if the number expressed by them is divisible by 4. (4) A number... | |
 | Edwin Pliny Seaver - 1895 - 408 σελίδες
...the units are divisible by 2. 2. A number is divisible by 3 if the sum of its digits * is uivisible by 3. Thus, 285 is divisible by 3, for 2 + 8 + 5 =...either 0 or 5. 5. A number is divisible by 6 if it is divisible by 2 and by 3. 6. A number is divisible by 8 if its hundreds, tens, and unite together are... | |
 | Edwin Pliny Seaver, George Augustus Walton - 1895 - 412 σελίδες
...determined by the following tests : 1. A number is divisible by 2 if the units are divisible by 2. 2. A number is divisible by 3 if the sum of its digits...divisible by 4. Thus, 6724 is divisible by 4, while 8731 is not. 4. A number is divisible by 5 if the units' figure is either 0 or 5. 5. A number is divisible... | |
 | Edwin Pliny Seaver, George Augustus Walton - 1895 - 444 σελίδες
...is divisible by 5. One hundred is divisible by 4, so any number of hundreds is divisible by 4. Hence a number is divisible by 4 if its tens and units together are divisible by 4. One thousand is divisible by 8, so any number of thousands is divisible by 8. Hence a number is divisible... | |
 | John Williston Cook, Nebraska Cropsey - 1896 - 452 σελίδες
...its digits io divisible by 3. Thus, 263457 is divisible by 3 because the sum of 2, G, 3, 4, 5, and 7 is divisible by 3. 3. A number is divisible by 4 if the number expressed by the two right-hand digits is divisible by 4. Thus, 39484 is divisible by 4... | |
 | Paul Klapper - 1916 - 408 σελίδες
...is divisible by 2 if the last digit is even. (2) A number is divisible by 3 if the sum of the digits is divisible by 3. (3) A number is divisible by 4 if the last two digits are divisible by 4. (4) A number is divisible by 5 if the last digit is 0 or 5.... | |
 | Charles Ernest Chadsey, James Hamblin Smith - 1917 - 298 σελίδες
...64301 Summary — Tests for Divisibility 47 2. A number is divisible by 3 if the sum of its digits is divisible by 3. 3. A number is divisible by 4 if the number formed by the last two digits is divisible by 4. Only even numbers are divisible by 4. 4.... | |
 | Charles Ernest Chadsey - 1920 - 328 σελίδες
...J Summary — Tests for Divisibility ,-# 51 2. A number is divisible by 3 if the sum of its digits is divisible by 3. 3. A number is divisible by 4 if the number formed by the last two digits is divisible by 4. Only even numbers are divisible by 4. 4.... | |
 | Eugene Henry Barker - 1920 - 264 σελίδες
...ones. 1. All even numbers are divisible by 2. 2. A number is divisible by 3 if the sum of its digits is divisible by 3. 3. A number is divisible by 4 if the number represented by the right-hand two digits is zero or is divisible by 4. 4. A number is divisible... | |
 | 1999 - 164 σελίδες
...digits of the number 6,561 add to produce the sum 18. Since 18 is divisible by 3, we know that 6,561 is divisible by 3. 3. A number is divisible by 4 if the number formed by the two right-hand digits is divisible by 4. For example, the two right-hand digits... | |
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A number is divisible by 2 if the units are divisible by 2. 2. A number is divisible by 3 if the sum of its digits * is uivisible by 3. 
