Subtracting 0 from a number is the number itself. Students love to apply this concept when they subtract numbers ending in zeros. This worksheet strengthens their accuracy with a set of problems on subtract multiples of 100 from 3-digit numbers. 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.