Simplifying Fractions to Lowest Terms

One hundred printable worksheets on reducing fractions to their lowest terms. The questions come in three shapes so the skill is scaffolded rather than drilled: some give you one half of the answer, as in 18/24 = ?/4 or 18/24 = 3/?, and others leave both terms blank. There are 1,200 problems in all, none repeated, and every worksheet has its answer key on the following page.