Three Digit Addition and Subtraction is Fun!

Three Digit Addition and Subtraction is Fun!

4 comments addition with regrouping, math, subtraction with regrouping

This week in math we have been reviewing three-digit addition and subtraction.  Let's be honest, this isn't a very exciting topic in math.  Since we finished up the unit in our math series, we have continued to work on this skill.  Three-digit add/sub is kind of our big hurrah in second grade these days so I figure the students should have a firm grasp on it before leaving me. 

Each day we have done a different activity to practice this skill.  Each one has been engaging, interesting, and fun.  Today when I told them they would be practicing this skill once more, they actually got excited...over three-digit addition and subtraction, my friends.  Weird, but awesome!  Here are a few of the activities we've done.

Roll a Number Sentence: The students rolled three numbers and used them to make two different 3-digit numbers (largest number possible and smallest number possible).  Then, they added those numbers together.  They also completed a subtraction version.  Every time they rolled a number or got a large sum, they announced it to their peers.  Who would have thought they would enjoy it so much?

5 in a Row: This partner game is always a hit in my room.  For this version, they used the pink and purple cubes pictured above to build a number sentence.  They used scratch paper to solve each problem.  I bribed them to be extra careful with the cubes and it worked because I will be able to use them again next year. Woo hoo!

Spin a Number Sentence: I had the students complete an addition and subtraction version of this activity.  They used a paperclip and the spinners at the top of their page to build number sentences.  Once again, there was a lot of announcing going on, "Whoa, I got 638!"  I figured as long as they were excited about what they were doing, I'd let it go.  They loved this!

All of these activities came from my Three-Digit Addition and Subtraction Fun Pack.  Since we haven't used all of the activities in the pack yet, we will likely do some more review of this skill next week.  I think I'll keep it secret and surprise them (still can't get over how much they are liking this skill-yipee!).

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