The workbook "division" continues practice to help students understand division as an inverse of multiplication and a method of distributing a set of items into equal groups. This workbook includes teaching students basic division vocabulary such as dividend, divisor, and quotient. Students practice dividing while solving straightforward problems and word problems that involve division. Essential skills include understanding the concepts of "remainder" in division, comparing division with repeated subtraction, and using estimation to verify the plausibility of their answers.