1•How can adding doubles help you to multiply by 2? Give an example.

2•If the ones digit of a number is greater than 1 is 0, what factor or factors must that number have?

3•How to u know that 5 is a multiple of 5?

if the ones digit of a number greater than 1 is 0. what factor of factors must that number have?

1• Adding doubles can help you multiply by 2 through the concept of doubling. To multiply a number by 2, you can simply add that number to itself.

For example, let's say we want to multiply 4 by 2. By adding the double of 4, which is 8, we can arrive at the answer. So, 4 + 4 = 8, thus 8 is the result of multiplying 4 by 2 using the strategy of adding doubles.

2• If the ones digit of a number is greater than 0, then the number must have a factor of 2. This is because any number with a ones digit greater than 0 is an even number, and all even numbers are divisible by 2. So, when the ones digit is greater than 0, it indicates that the number has a factor of 2.

For instance, consider the number 36. The ones digit is 6, which is greater than 0. Therefore, 36 is a multiple of 2 because it can be divided evenly by 2.

3• To determine if 5 is a multiple of 5, we need to check if it can be evenly divided by 5. One way to do this is by performing division.

When we divide 5 by 5, we get 1 as the result. If the division results in a whole number without any remainder, then the number is a multiple of the divisor. In this case, since 5 divided by 5 results in a whole number (1), we can conclude that 5 is indeed a multiple of 5.