Tuesday, June 26, 2012

Regrouping: 2-Digit Addition

Regrouping can be a very difficult concept for students. A great hands on way to teach adding double digits is with dimes and pennies. Kids figure out that they add digits in the ones place first. Then, they add the digits in the tens place.

First, they group their pennies together to create a ten (dime). They trade their ten pennies for a dime. Any pennies left over (that don't make a ten) represent the ones place. Next, they count the total number of dimes they have. The number of dimes represents the numeral in the tens place. Add all the coins up and you have your answer! This is a fantastic activity for visual learners. Below is an example:


  1. Love this idea. So smart to build true understanding. I've done trading with base ten blocks, but this is another way to make it all make sense. Thanks for sharing!

    Luckeyfrog's Lilypad

  2. I'm going to try this with my summer school kids. They are really having problems with that concept, but do understand the money values-so maybe it will help make sense of it. Thanks for sharing!:)