Mental arithmetic

This app allows to improve mental calculation skills easily and quickly. Our app are ideal for kids making their first steps in learning math, as well as for adults who want to train their brain. Keep your brain fit through regular math exercises. Your brain will work faster and more efficiently. Levels: 0. The composition of a number up to 10 1. Addition and subtraction up to 10 2. Addition and subtraction up to 20 3. Chains of examples up to 10 4. Addition and subtraction of two-digit and one-digit 5. Addition and subtraction of numbers, one of which is round 6. Addition and subtraction up to 100 7. Multiplication and division by one number 8. Multiplication and division up to 100 9. Addition and subtraction up to 1000 (round numbers. 10. Chains on addition and subtraction up to 100 11. Chains with brackets on addition and subtraction up to 100 12. Multiplication and division up to 1000 (round numbers. 13. Chains on multiplication and division up to 100 14. Mixed chains up to 100 15. Chains with brackets 16. Negative number 17. Chains with negative numbers 18. Comparing fractions 19. Addition and subtraction of fractions 20. Multiplication and division of fractions 21. Decimal fractions 22. Comparing fractions and decimals 23. Addition and subtraction decimals 24. Multiplication of decimals 25. Division of decimals 26. Exponentiation 27. Exponentiation. Long examples 28. Exponentiation. Fractions