Day: October 14, 2025

How to Multiply on the Abacus with a two digit multiplier?

Let’s generalize what we did with Multiplication with Single Digit Multiplier to a multi-digit multiplier. In this case we will look at a 2 digit by 2 digit multiplication. Again we will transform multiplication problems into a series of additions using our memorized 9×9 multiplication facts as we move both multiplier digits through the multiplicand digits.