What Is 20% of 50?

The answer

20% of 50 is 10.

The math

20% × 50 = 0.20 × 50 = 10

Or by the fraction: 20/100 × 50 = 1000/100 = 10.

The 20% shortcut

20% is simply two times 10%. So:

1. Find 10%: move the decimal one place left.
2. Double it.

For 20% of any number:

• 20% of 50 → 10% = 5 → double = 10
• 20% of 85 → 10% = 8.5 → double = 17
• 20% of 1,250 → 10% = 125 → double = 250

This is why 20% is the most popular tip percentage in the US — it’s the easiest mental math after 10%.

Reverse direction

If 10 is 20% of something, that something is 50. Calculation: 10 × 100 ÷ 20 = 50. Or simpler: 20% is one fifth, so the whole is five times 10 = 50.