3. Addition 
 4. Subtraction 
 6. Division 
 7. Fractions 
 8. Measurement 
 8.1.1. Metric Units of Length 
 8.1.2. Measure Using a Ruler 
 8.1.4.1. Addition of Lengths 
 8.1.4.1.1. Addition of Lengths in Meters or Centimeters 
 8.1.4.1.3. Addition of Lengths in Kilometers and Meters 
 8.1.4.2. Subtraction of Lengths 
 8.1.5. Word Problems on Lengths 
 9. Time 
 10. Geometry 
 11. Symmetry 
 12. Data Handling 
 Global
 Global