Problems & Solutions In Commercial Arithmetic Class XI by Dr. S. K. Singh, Samresh Chauhan SBPD Publications

1. Number System and Rapid Methods of Calculation, 2. Approximation, 3. Contracted Method of Multiplication, 4. Contracted Method of Division, 5. Decimalisation, 6. Ratio, 7. Proportion, 8. Table of Nine Values, 9. Chain Rule, 10. Percentage, 11. Discount, 12. Commission and Brokerage, 13. Simple Interest, 14. Compound Interest, 15. Compound Interest with the Help of Logarithms, 16. Profit and Loss, Appendix (Use of Logarithmic Tables) Logarithms and Anti-Logarithms Tables.