Subtraction in Fourth Grade
November 16, 2011 | Posted in: Class Updates
Before the freak October snowstorm, we administered an addition and subtraction screening to the students to measure kids’ performance on these core skills. Several kids had a tough time with the subtraction piece, and while I’ve spoken with those parents directly, I thought all parents might appreciate a quick explanation of the different kids of subtraction problems that we expect kids to master in fourth grade. The list, as well as an explanatory video, is below:
- Subtraction without borrowing – the easy stuff!
- Simple borrowing – only one place value needs to have borrowing take place
- Compound borrowing – multiple place values need to have borrowing
- Subtracting across the zero – You cannot borrow from a 0, so you must move over one place value.
- Subtracting across two zeroes – Same idea, but a bit more complex.
The sad part: I made a mistake on the FIRST problem. Oops! Yes, I know 3-1=2, not 1. 🙂
Leave a Reply
You must be logged in to post a comment.