CalcuLadder 4 Advanced Division Estimation Basic Fractions Decimals Author:Edwin C. Myers CalcuLadder 4 contains 192 exercise pages. The objective is the student's complete mastery of advanced division, basic fractions, and decimals. By "complete mastery" we mean that the student has both rapid, accurate recall of the basic facts involved and confident, efficient skill in the procedures for applying the basic facts to solve lengthi... more »er problems. CalcuLadder 4 helps make the procedural aspects of advanced division "second nature" for your students, and equips them for further progress in fractions and other numerical skills.« less