Add and Subtract Thousandths less than 100 without Regrouping: Horizontal Worksheet

This add and subtract thousandths less than 100 without regrouping worksheet consists of a set of questions on addition and subtraction, which help students develop fluency. In this worksheet, students practice solving problems written in the horizontal format. How numbers are laid out in a problem affects the method a student employs to solve it. Therefore to develop actual fluency and mastery of multiple strategies, students must practice different formats.