Question

How are adding and subtracting decimals different from multiplying decimals

Answer 1

For adding, it goes up the number you add with. Subtracting,it goes down the number you add with. But multiplying, if its a decimal with a number then or no just a decimal, like 23.94 or 0.23 your number goes down.<em /> The reason is that when multiplying it goes up, but multiply by 1, its the same, so if it's less than 1, it goes down.

Answer 2

In bmultiplying, you always have to move the decimal of the product the amount of place values the decimal has in each factor, for example, 1.50 times 1.50= 2.25, the factors together have 4 decimals, so you move the decimal 4 times to the right (try it, it gets rid of alot of zeros in the answer.)