Mental Math - Fitness for the Mind with Mathematics (free) for iOS

The classic with over a million downloads!From the reviews:"Great little App""Easy and efficient""Wonderful and fun"Boost your gray matter now! Here's a quick check: What's 7 (4 + 9)? Needed more than five seconds? This can be better! With Mental Math you can playfully improve your mental calculation skills through various exercises. Image puzzles are an incentive to carry on practicing.Mental Math has been developed in collaboration with mathematics teachers and is successfully put to used in many schools.Choose the exercises from many categories:- Basic Arithmetics- Division with Remainder- Percentage Calculation- Reading and Writing Roman Numerals- Common Multiples and DivisorsMoreover, there are- 4 Difficulty Levels- an adjustable Time Limit- Exercises in order of operations and braces- Exercises to practice specific Multiplication Tables