Math puzzles - Brain exercise vs Speed math:Mental arithmetic使用状況と統計

Pupils Math Puzzle Contains 11 chapters, each containing 10 levels of difficulty, massive different topics, let you enjoy the challenge! 1-4: basic arithmetic, Math individual arithmetic 5: addition, subtraction mixed computing 6: exponentiation 7: According to the given four topics, the calculated result of the operation of a maximum or minimum 8: Percentage, calculated as a percentage of the value given learning 9: calculation gives the greatest common divisor or least common multiple of two numbers 10: 3-6 gives some numbers to find the median or average value is calculated 11: equation, practice simple arithmetic equation