0.2 x 100 = 20
0.2 times 100 is 20. Multiplying by 100 moves the decimal point two places to the right, which turns 0.2 into 20. Below: the working, the percent version, and a live calculator.
0.2 × 100 = 20
0.2 x 100 = 20
Multiplying by 100 moves the decimal point two places to the right. Starting at 0.2, that gives 20.
Why it is 20 and not 2
0.2 is one fifth. A hundred split five ways is 20, which confirms the answer without touching a decimal point at all. Losing a single place is the usual slip, so the three are worth seeing side by side:
- 0.2 x 100 = 20
- 0.02 x 100 = 2
- 0.002 x 100 = 0.2
The percent version
Multiplying a decimal by 100 is exactly how you convert it to a percentage, so 0.2 written as a percent is 20%. That conversion is what most people typing this sum actually want. It runs both ways: 20% expressed as a decimal is 0.2.
Watch the direction, though. 0.2 x 100 is 20, but 0.2% of 100 is 0.2. Same digits, very different results.
Neighbours
More pairs are on multiplication answers.