1.2.1. Successor of a Number 
 1.2.2. Predecessor of a Number 
 1.3. n Digit Numbers 
 1.4. Place of a Digit 
 1.7. Rounding Numbers 
 4. Integers 
 6. Fractions 
 7. Decimals 
 10. Unitary Method 
 13. Mensuration 
 14. Geometry 
 16. Linear Symmetry 
 17. Data Handling 
 Global
 Global