This Design Idea presents a method for fast integer multiplying and multiplying by fractions. What can you do when you lack access to a hardware multiplier or MAC (multiply/accumulate) function and ...

Short multiplication close short multiplicationa method of setting out working in columns to calculate a multiplication. is a method using columns to set out and calculate a multiplication. Short ...

Students in some local elementary schools are learning a completely different way of doing multiplication. It’s a technique that many parents can’t understand. It’s called lattice multiplication. The ...

This summer, battle lines were drawn over a simple math problem: 8 ÷ 2(2 + 2) = ? If you divide 8 by 2 first, you get 16, but if you multiply 2 by (2 + 2) first, you get 1. So, which answer is right?

When I first saw this Japanese multiplication method, I just couldn’t believe it. Then I tried it and it works perfectly, but still can’t understand how it works—or how anyone found this method. You ...

We’ve often noted that whether had ancient man known binary, we could all count to 1023 on our fingers. We thought about that while watching [Numberphile’s] latest video about “Russian” multiplication ...

To farmers cultivating plantain on a large scale, getting suckers to buy is difficult because of their prohibitive cost. But farmers are now exploring a cheaper technique of multiplying suckers for ...