20% of 600 is 120. The one-fifth shortcut is the cleanest check on paper: 600 ÷ 5 = 120. Decimals agree: 0.2 × 600 = 120. Because 600 = 6 × 100 and 20% of 100 is 20, you can read the total as six hundreds and multiply the slice: 20 × 6 = 120. Split the base as 500 + 100: 20% of 500 is 100 and 20% of 100 is 20, so 100 + 20 = 120. Another split, 400 + 200, gives 80 + 40 = 120. 10% of 600 is 60; doubling lands exactly on 120. On the same twenty-percent rule, 20% of 500 is 100, 20% of 550 is 110, and 20% of 650 is 130—so six hundred sits evenly between five-fifty and six-fifty on that ladder.
Read 20% off £600 as “remove £120,” leaving £480 before delivery, tax, or fees. If the wording asks for twenty percent of six hundred—commission, allocation, or fee—the answer is 120, not four hundred and eighty. Mixing “of” with “off” is the fastest way to quote the wrong figure in a meeting.
Scale the base by ten: 20% of 6000 is 1200. If a six-hundred-unit pilot becomes six thousand at the same percentage rule, the slice scales in step—if you still see 120 on the larger row, the decimal or the base probably slipped. For a smaller cousin, 20% of 60 is 12, which is the same ratio one order of magnitude down.
Fifteen percent and twenty-five percent frame six hundred in different ways: 15% of 600 is 90 and 25% of 600 is 150, so twenty percent is the round fifth between those two. That neighbourhood check helps when someone quotes “about a fifth” next to a quarter or a three-twentieths-style figure.
If £600 is reduced by 20%, the reduction is £120 and you pay £480 (before other charges).
Change either value below to solve another percentage-of-number question instantly.
Formula used: (percentage ÷ 100) × number
Step 1: Convert 20% → 0.2 (or keep it as a fifth).
Step 2: Multiply: 0.2 × 600 = 120, or divide: 600 ÷ 5 = 120.
Full formula: (20 ÷ 100) × 600 = 120
Fifth shortcut: 600 ÷ 5 = 120. Split checks: 20% of 500 + 20% of 100 = 100 + 20 = 120, or 20% of 400 + 20% of 200 = 80 + 40 = 120. Ten percent first: 10% of 600 = 60, then double.
Six hundred is a round multiple of a hundred and of fifty, so several mental paths converge on the same 120. That redundancy is useful: if one route feels awkward, another usually feels natural on a napkin or a whiteboard.
The base is 6 × 100. Since twenty percent of a hundred is twenty, six copies of that slice stack to one hundred and twenty without touching a calculator. If you prefer thinking in halves and doubles, ten percent is sixty and the second sixty completes the fifth.
Six hundred also factors as 3 × 200. Each two-hundred block carries 20% of 200 = 40, and three forties sum to 120—a neat check when the story behind the number is “three equal chunks of two hundred” rather than hundreds and fifties.
Fastest for many people: 600 ÷ 5 = 120.
From 25% of 600 = 150, subtract 5% of 600 = 30 to land on one hundred and twenty—handy when quarters are already in your head from pricing or tip-style maths.
Example 1: Twenty percent off a £600 ticket or fee
The markdown is £120 and you pay £480 if nothing else stacks. Quote 120 when asked only for the percentage of six hundred.
Example 2: Six-hundred-unit batch
If a 20% holdback applies to quality or compliance, 120 units are reserved and 480 are cleared under a strict reading—again, “off” language flips which number is the headline.
Example 3: Budget line on a £600 subtotal
Allocating 20% to one cost centre means £120 for that line and £480 notionally elsewhere, unless the policy defines the percentage differently.
Example 4: Tenfold scale check
20% of 6000 is 1200. If you see 120 or 12000 on the scaled row, revisit whether you moved the decimal once or twice.
20% of 600 is 120.
Divide 600 by 5 or multiply 600 by 0.20. Both methods give 120.
Subtract the 20% amount of 120 from 600 and the remaining total is 480.
Twenty percent is exactly one fifth, so 600 ÷ 5 and 0.2 × 600 are the same operation in different clothes—both yield 120.