The question asks which list shows numbers that are all multiples of 10.

1. Option 1: 10, 20, 30, 40 - All these numbers are multiples of 10, as they are divisible by 10 without a remainder.

2. Option 2: 10, 15, 20, 25 - Numbers 15 and 25 are not multiples of 10, as they are not divisible by 10 without a remainder.

3. Option 3: 10, 12, 14, 16 - Numbers 12, 14, and 16 are not multiples of 10.

4. Option 4: 10, 11, 12, 13 - Numbers 11, 12, and 13 are not multiples of 10.

Correct Answer: Option 1: 10, 20, 30, 40

Would you like more explanation about multiples of numbers? Here are five related questions:

1. How do you determine if a number is a multiple of another?
2. What are the first ten multiples of 5?
3. Can a decimal number be a multiple of another number?
4. Why is 0 considered a multiple of every number?
5. How are multiples useful in solving real-world problems?

Tip: A number is a multiple of another if dividing the first number by the second yields no remainder.