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 ...

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 ...

Teachers face unprecedented challenges in accelerating students’ math learning since the pandemic, and teacher trainer Christina Tondevold said the stress can make it harder for teachers to plan ways ...

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 ...