understand that the area of a rectangle is the result of a multiplication partition (break apart) a number using your understanding of place value recall times-tables up to 9 x 9 and multiply by ...

break down (partition) a number using your understanding of place value recall times-tables up to 9 x 9 multiply by multiples of powers of ten Multiply each of these numbers by the 1-digit number and ...

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 ...

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?