Question

Marco said he can find 350 - 10 by taking the 0 off of 350 to get 35.

Answer 1

Answer:

Step-by-step explanation:

When Marco is dividing 350 by 10 he takes the 0 off 350 to get 35.

This is a correct step because in decimal system place value of II digit from the right is 10.

Hence 350 has 35 as value 35 multiplied by 10.  So when we divide by 10 we get 35 as answer.

But in decimal, 63.70, after points place values would be in negative powers of 10, i.e. 7 after point will have place value as 7/10 and next digit will have 7/10^2 and so on.

So in digits after decimal point we have place values in negative powers of 10 and as a result we cannot cancel 10 and write 63.7