75 is the whole number and 43 and 32 are the parts. When a number is made up of more than one digit we can use ... the ones column. 25 has 2 tens and 5 ones so we add 2 packets of pencils to ...

Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three-digit numbers together. When you do column addition, you lay out the numbers you are adding ...