 Divisibility by 2. A number is divisible by 2 if the units are so divisible. For example, 64, or 60 + 4, must be divisible by 2 if 4, the number of units, is divisible by 2, because any multiple of 10 is divisible by 2.  Essentials of Arithmetic - Σελίδα 80των George Wentworth, David Eugene Smith - 1915Πλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | David Eugene Smith - 1905 - 550 σελίδες
...being divisible by another we mean exactly divisible. 62. Divisibility by 2. A number is divisible by 2 if the units are so divisible. For example, 64, or 60 + 4, must be divisible by 2 if 4 is so divisible, because 60 is divisible by 2. 63. Divisibility by 5. A number is divisible by 5 if... | |
 | David Eugene Smith - 1905 - 646 σελίδες
...being divisible by another we mean exactly divisible. 62. Divisibility by 2. A number is divisible by 2 if the units are so divisible. For example, 64, or 60 + 4, must be divisible by 2 if 4 is so divisible, because 60 is divisible by 2. 63. Divisibility by 5. A number is divisible by 5 if... | |
 | Daniel Coit Gilman, Harry Thurston Peck, Frank Moore Colby - 1906 - 964 σελίδες
...last digit, the last two digits, or the last three digits is divisible by 2, 4, or 8 respectively; (b) a number is divisible by 5 if it ends in 0 or 5, by 10 if it ends in 0; (c) a number is divisible by !), or by 3, if the sum of its digits is divisible... | |
 | George Wentworth, David Eugene Smith - 1911 - 316 σελίδες
...is divisible by 3. Likewise, 534 is divisible by 3 because 5 + 3 + 4, or 12, is divisible by 3. 77. Divisibility by 5. A number is divisible by 5 if it ends in 0 or 6. For if a number ends in 0 it is tens, and 10 is divisible by 5. If it ends in 6, it is tens plus... | |
 | George Wentworth, David Eugene Smith - 1911 - 360 σελίδες
...number divisible by 4, or if the number ends in two zeros. Thus 724 and 1100 are both divisible by 4. A number is divisible by 5 if it ends in 0 or 5. Thus 11,135 and 24,410 are divisible by 5. A number is divisible by 3 if the sum of its digits is divisible... | |
 | George Albert Wentworth, David Eugene Smith - 1912 - 374 σελίδες
...is divisible by 3. Likewise, 534 is divisible by 3 because 5 + 3 + 4, or 12, is divisible by 3. 169. Divisibility by 5. A number is divisible by 5 if it ends in 0 or 5. For if a number ends in 0, it is tens, and 10 is divisible by 5. If it ends in 5, it is tens plus 5, and... | |
 | George Albert Wentworth, David Eugene Smith - 1914 - 378 σελίδες
...another we mean that the quotient is a whole number. 102. Divisibility by 2. A number is divisible by 2 if the units are so divisible. For example, 64, or...by 2, because any multiple of 10 is divisible by 2. 103. Divisibility by 5. A number is divisible by 5 if it ends in 0 or 5. For example, 180 and 275 are... | |
 | George Wentworth, David Eugene Smith - 1915 - 588 σελίδες
...another we mean that the quotient is a whole number. 86. Divisibility by 2. A number is divisible by 2 if the units are so divisible. For example, 64, or...2. 87. Divisibility by 5. A number is divisible by б if it ends in 0 or 5. For example, 180 and 275 are divisible by 5. 88. Divisibility by 3. A number... | |
 | Michael Vincent O'Shea, Ellsworth D. Foster, George Herbert Locke - 1918 - 944 σελίδες
...or if the number represented by the last two digits is divisible by 4; for example, 700, 132, 86388. Divisibility by 5. A number is divisible by 5 if it ends in 0 or 5 ; for example, 80, 65, 700. Divisibility by 6. An even number the sum of whose digits is divisible by three is divisible... | |
 | George Albert Wentworth, David Eugene Smith - 1920 - 332 σελίδες
...divisible. For example, since 4+1 + 1, or 6, is divisible by 3, we see that 411 is divisible by 3. Divisibility by 5. A number is divisible by 5 if it ends in 0 or 5. This tells us at a glance that 180 and 275 are divisible by 5. These are the most important cases of... | |
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