 | Alfred S. Posamentier - 2000 - 164 σελίδες
...discussion. There are eight examples given for divisibility by 3. These should be enough to show that a number is divisible by 3 if the sum of its digits is divisible by 3. The step to divisibility by 4 is simple. As mentioned on the student page, the simplest... | |
 | Mike Bryon - 2001 - 246 σελίδες
...digit is either 5 or 0 and by 10 if its last digit is 0 (to divide by 10 simply take off the 0). • A number is divisible by 3 if the sum of its digits is divisible by 3• A number is divisible by 9 if the sum of its digits is divisible by 9. • A number... | |
 | D. Duffield - 2001 - 196 σελίδες
...divisible by 2 if its last digit is even, for example: 1 024 is divisible by 2, since 4 is even. « A number is divisible by 3 if the sum of its digits is divisible by 3, for example: 2 934 is divisible by 3 since 2 + 9 + 3 + 4 = 18 which is divisible by... | |
 | Katherine Avila, Walch Publishing - 2002 - 108 σελίδες
...left blank so you can fill in the "rules." A number is divisible by 2 if it ends in an even number. A number is divisible by 3 if the sum of its digits is divisible by 3. A number is divisible by 4 if its last two digits are divisible by 4. A number is divisible... | |
 | Steve Mills - 2002 - 60 σελίδες
...Possible numbers that could go in box a include: 12,24,84, 132, 156 ... Child's own answers to show a number is divisible by: 3 if the sum of its digits is divisible by3. 4 if the last 2 digits are divisible by 4. 5 if the last digit is 0 or 5. 6 if it is... | |
 | M. J. Tipler, K. M. Vickers - 2002 - 486 σελίδες
...21. Practice Questions 6, 13, 45, 58, 62, 66 A number is divisible by 2 if it ¡s an even number. A number is divisible by 3 if the sum of its digits is divisible by 3. Example 198 is divisible by 3 since 1+9 + 8=18 and 18 ¡s divisible by 3. A number... | |
 | Terry H. Stickels - 2002 - 100 σελίδες
...know the following rules of divisibility: A number is divisible by 2 if it ends in an even digit. A number is divisible by 3 if the sum of its digits is divisible by 3. Is there such a rule for dividing by 8? Which one of the following five words doesn't... | |
 | Thomas H. Sidebotham - 2003 - 488 σελίδες
...means it is an even number. Example 3. The number 738 is divisible by 2, since it ends in 8. Test 4. A number is divisible by 3 if the sum of its digits is divisible by 3. Test 5. A number is divisible by 4 if the number formed by the last two digits is divisible... | |
 | Jeff Kolby - 2021 - 612 σελίδες
...divisible only by itself and 1 . The prime numbers are 2, 3, 5, 7, 11, 13, 17, 19,23,29,31,37,41,. .. • A number is divisible by 3 if the sum of its digits is divisible by 3. For example, 135 is divisible by 3 because the sum of its digits (1 + 3 + 5 = 9) is... | |
 | Jeff Kolby - 2024 - 586 σελίδες
...only by itself and 1. The prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, ... • A number is divisible by 3 if the sum of its digits is divisible by 3. For example, 135 is divisible by 3 because the sum of its digits (1 + 3 + 5 = 9) is... | |
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A number is divisible by 3 if the sum of its digits is divisible by 3. 
