One Step Equations - Partner Perfection: These differentiated, self-checking worksheets contain 4 sets of 15 one step equation problems for a total of 60 problems! There are two versions of the worksheets - one with columns 1,2 and one with columns A,B. The 1,2 version is slightly harder and has several fractions, decimals, and negatives. Some of the fractions require getting common denominators. The A,B version has a few simple fractions, negatives, and decimals, but is mostly whole, positive