[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"content-seo:mentalMath":3},{"description":4,"seo":5,"faq":8},"A free mental math test: you get 60 seconds to solve as many arithmetic problems as you can. Addition, subtraction, multiplication and division come in a random mix — addition uses two numbers from 2 to 100, subtraction answers stay between 2 and 100, and multiplication and division use numbers from 2 to 12, so every division comes out even. Type with the on-screen keypad or your keyboard: a correct answer brings up the next problem instantly, and a wrong one simply clears with no penalty. Your score is the number of correct answers, sorted into four ranks from Warming Up to Mental Math Monster, with a global leaderboard and a challenge link you can send to friends.",{"ogTitle":6,"ogDescription":7},"Mental Math Test | 60-Second Speed Math Game - Giggleus","How many + − × ÷ problems can you solve in 60 seconds? Random mixed arithmetic, no penalty for mistakes, a global leaderboard and friend challenges. Free, no sign-up.",[9,12,15,18],{"question":10,"answer":11},"What kind of problems are in the mental math test?","A random mix of addition, subtraction, multiplication and division. Addition uses two numbers from 2 to 100, subtraction answers fall between 2 and 100, and multiplication and division use numbers from 2 to 12, so the answer is always a whole number and never negative. The difficulty stays the same for the full 60 seconds.",{"question":13,"answer":14},"What happens if I type a wrong answer?","Nothing is deducted. Once you've typed as many digits as the correct answer has, a wrong entry is cleared and you try the same problem again. You can also delete one digit at a time with the keypad's delete key or Backspace.",{"question":16,"answer":17},"What counts as a good score?","Your score is the number of correct answers in 60 seconds, split into four ranks at 15, 30 and 45. Reaching 45 or more — about 1.3 seconds per problem — puts you in the top rank, Mental Math Monster.",{"question":19,"answer":20},"How is this different from Flash Mental Math?","Here each problem stays on screen until you answer it, and you race the clock. In Flash Mental Math (flash anzan), numbers blink by one at a time, you add them up from memory, and one wrong total ends the run."]