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Is 729 divisible by3?
Since the sum, 18, of the digits of 729 is divisible by 3, 18 = 3 x 6, then 729 is divisible by 3.
Is 729 divisible by 9?
Yes. 729 divided by 9 is 81.
How could you adapt the rule for division by 3 to decide easily when a number is divisible by 9?
Just add up the digits and if that sum is divisible by 9 then the original number is divisible by 9. Example 729 = 7+2+9 = 18 (18 is divisible by 9 therefore 729 is divisible by 9) 123456789 = 1+2+3+4+5+6+7+8+9 = 45 (45 is divisible by 9 therefore 123456789 is divisible by 9)
What numbers are divisible by 243?
numbers are divisible by 243 are the multiples of 243 like 243, 486, 729, 972,...
What is the sq root 729?
27^2 = 729
What is divisible by 729?
Multiples of 729.
Is 729 divisible by3?
Since the sum, 18, of the digits of 729 is divisible by 3, 18 = 3 x 6, then 729 is divisible by 3.
What is 729 by?
729 is divisible by 1, 3, 9, 27, 81, 243, 729.
Is 729 divisible by 9?
Yes. 729 divided by 9 is 81.
Is 729 divisible by 9 or 8?
729 is divisible evenly by 9, but not evenly by 8, quotient is 91, remainder is 1
Is 729 divisible by 8 and 9?
No.
Is 729 divisible by 6?
yes!
How do you know that 729 is not a prime number?
It is divisible by 9.
How could you adapt the rule for division by 3 to decide easily when a number is divisible by 9?
Just add up the digits and if that sum is divisible by 9 then the original number is divisible by 9. Example 729 = 7+2+9 = 18 (18 is divisible by 9 therefore 729 is divisible by 9) 123456789 = 1+2+3+4+5+6+7+8+9 = 45 (45 is divisible by 9 therefore 123456789 is divisible by 9)
Is 729 a composite number?
Yes. It is divisible by 3.
What numbers are divisible by 243?
numbers are divisible by 243 are the multiples of 243 like 243, 486, 729, 972,...
What is 1458 divisible by?
1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243, 486, 729, 1458.
