ولمپياد الرياضيات العالمي (بالإنجليزية: International Mathematical Olympiad, IMO) هي اولمپياد رياضيات سنوي مكون من 42 نقطة على ستة أسئلة للطلبة قبل المرحلة

Dyscalculia refers to a wide range of lifelong learning disabilities involving math. There is no single type of math disability. Dyscalculia can vary from person to person. And, it can affect people differently at different stages of life.

Two major areas of weakness can contribute to math learning disabilities:
 

Business managers and executives are challenged with questions and faced with decisions every day: Where do I set my selling price? How much must I reduce costs to make my desired contribution margin? How much storage capacity will I need on my e-mail server? All of these business problems have one thing in common. They all contain an unknown element—selling price, cost reduction level, or server capacity. The value of these unknown elements is determined by using algebra.