Use this rounding script if you want. Also if you try this out more than once you will see the numbers change. Type in number 10-999 to see it be rounded. Do a three digit number if you chose hundred. Don't have decimals. If you don't type in ten or hundred and write a number it will round it to the nearest ten.
I made this for my friend who wants to try rounding things not to the nearest decimal because that is what the rounding block does. Changed it so that you can choose the number.