Addition & Subtraction within 20 of 3 Numbers Cut & Paste worksheets for students with autism and special education needs.
10 No Prep Worksheets:
5 pages of addition with missing addends
5 pages of addition & subtraction with missing addends
Given an addition or subtraction problem consisting of three single digit numbers to add or subtract, STUDENT will use pre-taught strategies to determine the missing addend in order to solve the problem, with 80% accuracy, in 4 out of 5 opportunities, by MONTH, YEAR.