ISubtraction is a challenge of its own. When Mr. Andary make us subtract from 100...it's a whole new ball game. We learned a few new strategies for making this simple for us.
Earlier in the year, we learned that when we do not have enough ones to subtract from...we need to exchange our 10s for more 1s. That was easy! Now we have two zeros to deal with! Now it's getting complicated! But the Mackenzie Dollar can help! When I trade a dollar for 9 dimes and 10 pennies, I have enough ones and tens to subtract from! It also proves I still have $1.00 or 100 cents. Using this as a visual proof drawing helps. Thanks Mackenzie! Mackenzie for PRESIDENT! :)
1 Comment
Mom
1/5/2017 04:04:45 pm
That is so funny
Reply
Leave a Reply. |
Archives
November 2018
|