Regrouping

In math workshop this week we have started a new unit with regrouping when adding double digit numbers. Many of you parents learned this as carrying. We call it regrouping because the children learn the reason behind why they have to "carry the one"- when your number adds up to more than 10, you have to separate it into tens and ones. For example 14 becomes 1 ten and 4 ones. You regrouped 10 of the ones as 1 ten. That 1 ten is the 1 that you carry.

We practice regrouping using rods and cubes today and will move on to paper pencil addition next week. It is important for your child to understand why you solve a problem a certain way, and not just memorize a formula or method.