For example, since I want to make sure my students get accustomed to reviewing the various math concepts and standards we've learned all year, I have them practice regularly. I want them to get to a point where they are so familiar with grade level math content, that solving these types of problems becomes automatic.
Homeschool worksheets are far more than busy work. They are an important part of making sure that the concepts you teach in your home school stick with your child. Just make sure you have a good source for providing the worksheets, and that they're the right ones for your kid or kids.
Subtract 1-, 2-, or 3-digit numbers from 3- and 4-digit number with/without renaming
Review subtraction of 2 numbers whose sums would be 18 or less
math worksheets addition
math worksheets grade 5
math worksheets grade 7