My question is this: Is it reasonable to say that the answer for 63*11 lies between 60*10 and 65*15. To which number do you think the answer is closer? I say it is closer to 65*15 is this right?

I disagree with you.

Although 65 is closer to 63, 10 is a lot closer to 11.

Thank you.

You're welcome.

To determine which number the answer (63*11) is closer to, let's break down how to approach this problem:

1. Calculate the value of 63*11:
- Multiply 63 by 10: 63 * 10 = 630
- Multiply 65 by 15: 65 * 15 = 975

So, the value of 63*11 falls between 630 and 975.

2. To determine whether the answer is closer to 630 or 975, let's analyze the number line:
- Distance from 630 to 63*11: 63*11 - 630 = 210
- Distance from 975 to 63*11: 975 - 63*11 = 90

We can see that the distance from 630 to 63*11 is larger than the distance from 975 to 63*11. Therefore, the answer (63*11) is closer to 975 than 630.

Hence, you are correct in saying that the answer is closer to 65*15.