1.1.1. Numbers in Expanded Form
1.1.3. Addition of Whole Numbers
1.1.6. Solving Magic Square
1.1.7. Subtraction of Whole Numbers
1.1.10. Multiplication of Whole Numbers
1.1.11. Properties of multiplication
1.1.12. Box multiplication
1.1.13. Lattice multiplication
1.1.14. Multiply using area models I
1.1.15. Multiply using area models II
1.1.17. Division of whole numbers
1.1.20. HCF (Highest Common Factor)
1.1.21. LCM (Lowest Common Multiple)
1.1.22. Properties of LCM and HCF
1.1.23. Word problems on HCF and LCM
1.1.25. Composite Numbers
1.1.26. Prime Numbers
1.1.28. Twin Primes
1.1.29. Prime Triplet
1.1.30. Co-Primes
1.1.31. Prime Factorization of a Number
1.1.32. Exponets
1.2. Fractions & decimals
1.4. Patterns and algebra
1.5. Place of a Digit
1.7. Rounding Numbers