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계산근육 첫 출시! 중고등 수·과학 계산(단위환산·유효숫자·몰농도·화학양론 등)을 매일 새 문제로 무한 반복 훈련하세요.
Math & Science Calculation Drill: Repetitive practice of middle and high school unit conversions, significant figures, molar concentration, and chemistry calculations with new problems every day.
Calculation Muscle is a calculation practice app that allows you to repeatedly train in middle and high school math and science calculations with new problems every day. Repeat frequently tested calculations, such as unit conversions, significant figures, molar concentration, and stoichiometry, until your hands remember them. For exam questions where you get them wrong due to calculation errors even though you understand the concepts, repetitive practice is the answer. Calculation Muscle generates an unlimited number of problems with constantly changing numbers, so you will never run out of workbooks. You can solve problems anytime, even without an internet connection. ■ Free Input + Automatic Grading Instead of guessing multiple-choice answers, you actually calculate and input your answers yourself. It automatically checks units (mol/L=M), significant figures, fractions, decimals, and scientific notation to ensure the same value for all, so it never marks a correct answer as incorrect. ■ New Problems Every Day (Infinite Generation) Calculations involving unit conversions, significant figures, concentration, stoichiometry, and proportions are presented anew every day with only the parameters changed. This is real calculation practice that cannot be solved by rote memorization. ■ Select and Repeat Only Incorrect Types Collect the types of calculations you frequently get wrong and repeat them intensively. Strengthen only your weak points like muscles. ■ Daily Challenge & Streak Solve today's calculation challenge every day and build a streak record. ■ For: Middle and high school students who want to reduce calculation errors, science students preparing for exams who get confused by unit conversions and significant figures, and those who want to increase their calculation speed before exams. Ad-based free. Suitable for ages 13 and up. All problems are automatically generated and work without an internet connection.