Once all the options are set, press the Add page numbers button. It will process the PDF file(s) and provide the download button to save them to your computer. 4] PDFTK Builder.

If the two numbers in a place value column add up to ten or more, you must regroup. This means breaking a number up into thousands, hundreds and tens to help with the addition.

Step 1: Numbers is smart enough to know which numbers you want to add if they’re in a column or a row. So, you don’t have to select the cells first unless you prefer to do so.

Adding larger numbers in your head is not always easy. If you need to use pen and paper, then the column method is a good way to add. It involves writing one number beneath the other, so that the ...