 | 1928 - 1958 σελίδες
...An even number is divisible by 2. 2. A number whose unit's figure is 0 or 5 is divisible by 5. 3. A number is divisible by 3 if the sum of its digits is divisible by three. 4. A number is divisible by 9 if the sum of its digits is divisible by 9. Other... | |
 | Robert Lee Morton - 1927 - 374 σελίδες
...would seem to be little advantage in learning rules for divisibility. Many recommend the rule that a number is divisible by 3 if the sum of its digits is divisible by 3 but in the fractions that people ordinarily handle, there are very few with which this... | |
 | Jack Frohlichstein - 1967 - 340 σελίδες
...both the numerator and denominator of TT= are zo divisible by 2 because 2 and 6 are even numbers. (c) Any number is divisible by 3 if the sum of its digits is 24 3 divisible by 3. Example: ^ is divisible by - because 24 = 2 JvJ .J + 4 = 6 and 36 = 3 + 6 = 9,... | |
 | Martin M. Zuckerman - 1998 - 406 σελίδες
...digits of 36, you obtain 3 + 6 = 9 Thus the sura of the digits is also divisible by 3. In general, a number is divisible by 3 if the sum of its digits is divisible by 3. Otherwise, the number is not divisible by 3. Example 5 ^ Which of the following numbers... | |
 | Marlene Folkes, Mary Maxwell - 2014 - 244 σελίδες
...3 5 105 35 Answer: 105 = 3 x 5 x 7 7 1 A number is divisible by 2 if its last digit is even or 0. A number is divisible by 3 if the sum of its digits is divisible by three. A number is divisible by 5 if its last digit is 0 or 5. Exercise 1.9 Express each... | |
 | A. S. Kalra - 1995 - 302 σελίδες
...digit is even or zero For example 69 874 is divisible by 2 but 81 673 is not Divisibility Test for 3 A number is divisible by 3 if the sum of its digits is divisible by 3 For example In order to find if 3684 is divisible by 3, add the digits 3 + 6 + 8 + 4... | |
 | M.J. Tipler, K.M. Vickers - 1996 - 368 σελίδες
...Algebra from Previous Levels REVISION DIVISIBILITY A number is divisible by 2 if it is an even number. A number is divisible by 3 if the sum of its digits is divisible by 3. For instance 259104 is divisible by 3 since 2 + 5 + 9+1+0 + 4 = 21 is. A number is... | |
 | Brian Burrell - 1998 - 386 σελίδες
...in 0, 2, 4, 6, or 8, it is divisible by 2. This is the simplest divisibility test. Here's another: a number is divisible by 3 if the sum of its digits is divisible by 3. Table 1.6. Divisibility Tests A whole no. is divisible by >J_ 2 its last digit is 0,... | |
 | Haym Kruglak, John Moore, Ramon Mata-Toledo - 1998 - 508 σελίδες
...last digit is even. EXAMPLE 3.6. The numbers 64, 132, 390 are each exactly divisible by 2. Rule 2. A number is divisible by 3 if the sum of its digits is divisible by 3. EXAMPLE 3.7. Consider the numbers 270, 321, 498. The sums 9, 6, 21 of the digits are... | |
 | A. S. Kalra - 1998 - 246 σελίδες
...its last digit is 0. For example 6740 and 35 960 are both divisible by 10 Divisibility Test for 3 A number is divisible by 3 if the sum of its digits is divisible by 3 For example In order to find if 3684 is divisible by 3, add the digits 3 + 6 + 8 + 4... | |
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A number is divisible by 3 if the sum of its digits is divisible by 3. 
