A key part—though surely not the only part—of early-grades math is ensuring students get the basic arithmetic functions down and, beyond that, making sure they’re able to swiftly and automatically ...

This is called repeated addition. You add the same number lots of times. This can also be written as a multiplication calculation. There are five equal groups of two. The five represents the number of ...

Multiplication is calculating the sum of groups of the same size. There are lots of ways to build and describe multiplication problems. Using repeated addition, you can add equal groups together, one ...

Inside: Christmas Tree Bump Game for Kids If you’re looking for a Christmas math activity that feels more like a game than a worksheet, this Christmas Bump Game is exactly what you need. BUMP games ...

A new proof about prime numbers illuminates the subtle relationship between addition and multiplication — and raises hopes for progress on the famous abc conjecture. One morning last November, the ...

A long-standing puzzle seems to constrain how addition and multiplication relate to each other. A graduate student has gone further than anyone else in establishing the connection. In 1983 the ...