When first learning to multiply two two-digit numbers your child will use the area model. This video will help you and your child use place value understanding and properties of operations to ...

How to multiply a multi-digit number by a 2-digit number. ... More on Operations - Calculations. Find out more by working through a topic. How to use the short multiplication method .

The students are now working on 192-by-192-digit multiplication and 384-by-384-digit multiplication. Darius completed 12-by-12-digit multiplication in 1 minute, 9 seconds; Gio completed 48-by-48 ...

In our number system, the value of a digit depends on its place, or position, in the number. So, for example, the number 4,276 is made up of 4,000 + 200 + 70 + six.

The Common Core State Standards teach students the algorithm for multi-digit addition and subtraction in 4th grade. But some experts say it should be taught sooner.