# Second Grade Math Warm-Ups: Week of March 28- April 1, 2016

We were continuing with our study of subtraction this week, and so all our MWUs are related.  Happy calculating!

Monday

This one is just to keep our brains fresh about money and time, since we’ve “officially” moved on, but that we obviously should not forget. 😊

Tuesday

This problem pushed my kiddos to think about the reciprocal relationship of addition and subtraction.  I had to remind many of them how this could be solved with subtraction, but we had a great conversation once I convinced them it was possible.  The strategies are ones we had been working on in Math Workshop lately.

Wednesday

Just because, you know, I don’t want them to forget how to add…:)

Thursday

Tried this format again because I wanted to see what they remembered.  The great question after we modeled our thinking with the number line was “Where is our answer?”  This one took a few minutes for those that still didn’t see the connection between the parts and whole, between how we could either add or subtract.  It was also surprising (still) to some that the answer to the second equation is the same.  Ja’Mia had to convince us of you she knew.  And yes, she was able to do that by telling us about how addition and subtraction are “opposites.”

What would you add to this week of warm-ups? 🙂