If you like the idea of adding that as a memory aid, select cell range C20:Z20 and Format Cells Font bold AND italic. It is very easy to remember your 20's and to count by 20's.Or, you can change the Step Value increment to 5 or 25 or 100, etc. By the way, you can easily expand the definitions of a and n and create a larger chart to access and learn from. If you are only asked to memorize through your 12's, select cell range C2:M12 and do menu Format Cells Fill light brown. Select the cells that you will memorize, say up to your 12x12's or 15x15's - so select cell range C2:P15 for your 15's and do menu Format Cells Fill, light brown.Do menu Format Cells Font size 16 or 18 - make it large enough so you will enjoy reading it.Select in the far upper worksheet corner above the 1 of Row 1 and to the left of A of column A to select the entire worksheet simultaneously.Do menu Format Cells Fill canary yellow, Font red for the selection B2:B25.Select or stay on the cell range B2:B25 and do menu Insert Name Define name a to the cell range selected, just the letter a, without quotes.The result will be in column B you have the values 1 to 25, and in column A the Row Headers a=2, a=3, a=4. Select cell range B2:B25 and enter 2 to cell B2, then do menu Edit Fill Series (in columns, linear, with Step value 1), OK.Enter, w/o the external quotes, the formula, '='a='&B2' and do menu item Edit Fill Down.Select the cell range of rows in column A (by dragging the mouse on it) from A2:A25.Do menu Format Cells Fill canary yellow and then Font dark blue to the selection range. Do menu Insert Name Define name n to the cell range B1:Z1, without quotes.Do menu Edit Fill Series (in Rows, Linear) (Step value = 1), OK.Select with the mouse by constantly holding it down as you move over the columns in row 1, cell range B1:Z1.Enter to cell A1, w/o quotes, 'n: ' (with the trailing space) and do menu Format Cells Alignment right.

Select Preferences, under Excel, and in General, uncheck Use R1C1 reference style in Calculation, check Automatically.Enter into the new workbook the Column and Row Headers for the Times Table: X Trustworthy Source Microsoft Support Technical support and product information from Microsoft.

7 multiplication table up to 100