Question
Is 3 a factor of 711? How do you know without multiplying or dividing?
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Answer to a math question Is 3 a factor of 711? How do you know without multiplying or dividing?
Brice
4.8106 Answers
1. According to the divisibility rule of 3, a number is divisible by 3 if the sum of its digits is divisible by 3.
2. The digits of 711 are 7, 1, and 1.
3. Find the sum of these digits:
7 + 1 + 1 = 9
4. Check if the sum is divisible by 3. Since:
9 \div 3 = 3
5. The sum 9 is divisible by 3, so 711 is also divisible by 3.
6. Therefore, 3 is a factor of 711.
2. The digits of 711 are 7, 1, and 1.
3. Find the sum of these digits:
4. Check if the sum is divisible by 3. Since:
5. The sum 9 is divisible by 3, so 711 is also divisible by 3.
6. Therefore, 3 is a factor of 711.
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