1. Which city’s population increased the most between 2001 and 2011, according to the table?

2. By what number should we multiply Patna’s 2011 population (16,84,222) to get a number close to Mumbai’s 2011 population (1,24,42,373)?

3. Which statement explains why multiplying a number by 5 is the same as first dividing by 2 and then multiplying by 10?

4. Find a quick way to calculate 2 × 1768 × 50. Which is the correct value?

5. Find a quick way to calculate 72 × 125. Which is the correct value?

6. Find a quick way to calculate 125 × 40 × 8 × 25. Which is the correct value?

7. Calculate quickly: 25 × 12 equals which of the following?

8. Calculate quickly: 25 × 240 equals which of the following?

9. Calculate quickly: 250 × 120 equals which of the following?

10. Calculate quickly: 2500 × 12 equals which of the following?