-Addition and subtraction skills is a huge and important subject.These worksheets are a great way to help your students master single digit addition and subtraction. -Grade Levels K - 1st, Homeschool ------------------------------------- Here's what you will get : -1 PDF File ------------------------------------- Include in the PDF File : -20 worksheets + 20 answer sheets -Answer key in back -Print Size 8.5x11" (US Letter) -This is a digital download. No physical product will be shipped