What will be the average of 0.3, 3, 0.03 and 0.002?

Average (arithmetic mean) of a set of numbers equals the sum of all the numbers divided by how many numbers there are: Average = (Sum of values) ÷ (Count of values).

1. The numbers to average are 0.3, 3, 0.03, and 0.002.

2. Add them together, keeping the decimal places aligned: 0.3 + 3 = 3.3; 3.3 + 0.03 = 3.33; 3.33 + 0.002 = 3.332.

3. Divide the sum by the count of numbers (4): 3.332 ÷ 4 = 0.833.

Cross-check: Multiplying the result back by the count confirms it: 0.833 × 4 = 3.332, which matches the sum computed above.