2,0001*0,0001

Interpret comma as decimal point.

Compute: 2.0001 × 0.0001

• Use distributive: (2 + 0.0001) × 0.0001 = 2×0.0001 + 0.0001×0.0001 = 0.0002 + 0.00000001 = 0.00020001

Answer:

• In decimal notation: 0.00020001
• In European decimal notation: 0,00020001
• Exact fraction: 20001 / 100000000