CalcuLadder® 6 includes drill Levels 81 - 96. After reviewing frac­tions and decimals, CalcuLadder 6 covers percents, and how percents, decimals, and fractions work to­gether. It then goes into English units of length (inch, foot, yard, rod, furlong, mile, fathom), weight (ounce, pound, ton), and vol­ume (teaspoon, table­spoon, fluid ounce, cup, pint, quart, gallon, peck, bushel). Very useful for cooking and practical know-how!

Metric units of length, volume, mass, and temperature are also cover­ed, as well as how to convert between English and Metric units. Even Roman numerals are covered!