The aim of this guide is to show how to add decimals with a different number of decimal places. We will focus on the formal written method. Let's look at some examples. Set out the calculation, making ...

Learn how to subtract decimals that have a different number of decimal places. Let's set out the calculation as a column subtraction. When we set out a column subtraction we make sure our ones, tenths ...

As much as we hate numbers, we know we can’t escape them. Just when you thought you were rid of your primary and high school classes, numbers are everywhere. They can be part of your job and they ...

Students in Melissa Williams' kindergarten class at the Westminster School in Atlanta, Georgia, practice connecting quantities to written numbers — a key part of number sense. Credit: Holly Korbey for ...

The origins of the decimal point, something millions of people use daily, may be much older than we first thought. It was initially considered to have originated in 1593, having been used by German ...