Rounding lab

Rounding decimals · Interactive lesson

Understand rounding down, up and off with a number line

Pick a place value, drop a sticker for the original number on the number line, then find the benchmark your method points to.

1

Choose the number and the method

First decide which method to use and which place to keep.

Rounding method

You will express 3.74 to the tenths place using Round up.

2

So which digit tells you what to do?

Choose the digit you have to look at.

You want to express 3.74 to the tenths place using Round up.

Find the place right after the one you keep, and tap that digit.

Check which place you are keeping first, then pick the place right after it.