Learn mental arithmetic through 59 lessons on addition, subtraction, multiplication, division, squaring, and verification. Practice with timed training sessions and compete with friends via Game Center. Track progress and improve calculation speed.
Practice arithmetic reasoning and mathematics knowledge with 300 questions. Complete twelve 25-question tests. Review topics including algebra, fractions, decimals, and percentages. Track progress and improve math skills for the exam.
Calculate force using and piston diameter. Input values in multiple units. Display results with up to 16 decimal places. Copy results to other apps. Include formulas for reference. Optimized for efficient use.