4th Grade Math 1.7, Subtract Whole Numbers with Regrouping, Renaming

We can subtract whole numbers by lining up the digits by place value, then subtracting from right to left. We first subtract the Ones, then the Tens, then the Hundreds, etc. We regroup when the digit in the minuend is less than the digit in the subtrahend. We can turn our paper sideways to help us write each digit in the correct place value. We can also use grid paper or a place value chart. We solve word problems using subtraction with regrouping. We subtract to find a difference, then use addition to check our answer. Inverse operations undo each other. Addition and subtraction are inverse operations. We see how we can combine place values to subtract when there is a zero in the minuend. Many students make math errors because they don't write their numbers clearly, or they forget to correctly lineup their place values.

4th Grade Math 1.5, Rename Numbers, Combine Place Values
https://youtu.be/19X12LcRits

4th Grade Math 1.6, Add Whole Numbers with Regrouping, Renaming
https://youtu.be/BdNVPPSRNeE

4th Grade Math Playlist (2015)
https://www.youtube.com/playlist?list=PLKi4WTp6PRGX7RhcxctRibNb7V091JZfn

I'm using the Houghton Mifflin Go Math!
2015 copyright textbook for this playlist.

You can practice online using the textbook's website
https://www.gomathacademy.com/

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