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<Posts Tagged ‘exchange’
Same Value Exchange
Here is an example of the “Same Value” Exchange Math Strategy that we have been working on this week. It is a way to add or subtract 3 and 4 digit numbers. I will record the steps tomorrow for a better example, but for today here is an image for you to look at.
Step 1: Say the top NUMBER
Step 2: Write it out in Expanded Form
Step 3: Say the bottom NUMBER
Step 4: Write it out in Expanded Form
Step 5: You can start adding with any collumn, the hundreds, tens or ones…(make sure to break them apart)
Step 6: Circle the numbers that are alike (we say live in same house and family) tens, ones, ect.
Step 7: Add up and write the correct number in STANDARD FORM
This seems like a lot of steps, but if the kids can actually do this, they will RESPECT THE DECIMAL and have a better understanding of numbers which will help them in the upper grades!
YOU will thank me later! I learned the good ol’ Carrying and Borrowing way myself, it is a hard transition, but it totally makes sense and the children will get the RIGHT answer and know why they did when using this STRATEGY!
We will post more examples soon!!!
I had the kids COLOR CODE the steps! I think it really helped them. Here are a couple of examples that we did in class! I was SO excited for them!
