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What number is a multiple of both 15 and 5?
It is: 15 because 1*15 = 15 and 3*5 = 15
What is the LCF of 3 and 5?
The LCF, or Lowest Common Factor, of 3 and 5 is 15. This is because 15 is the smallest number that both 3 and 5 can divide into evenly. In other words, 15 is the smallest multiple that is common to both 3 and 5.
What number is a multiple of 5 divisible by 3 but greater than 495 and less than 525?
510. To be divisible by 3, it must be a multiple of 3. Thus the required number is a multiple of both 3 and 5, which will be a multiple of their lcm: lcm(3, 5) = 15. → 495 ÷ 15 = 33 → first multiple of 15 greater than 495 is 15 x 34 = 510 → 525 ÷ 15 = 35 → last multiple of 5 less than 525 is 15 x 34 x 510 → number required is 510.
How do you decide if a two digit number is a multiple of a one-digit number?
If the number is even, it is a multiple of 2 If the sum of the digits make a number divisible by 3, the number is a multiple of 3 If the number ends in 5 or 0, the number is a multiple of 5 If the number is divisible by 2 and 3, the number is a multiple of 6 If the sum of the digits make a number divisible by 9, the number is a multiple of 9
Is 3 a multiple of 5?
No.3 is less than 5, thus cannot be a multiple of it; 3 is prime, therefore cannot be a multiple of any number besides 3 (which is one of its factors); by definition, 3 is ismply not a multiple of any number but 1 and 3.
