How to find 1 percent of 40
"Percent" means per hundred, so 1% is the fraction 1/100, or 0.01 as a decimal. Taking 1 percent of 40 means multiplying 40 by that fraction:
1% of 40 = 40 x 1 / 100
= 40 / 100
= 0.4The same answer comes from the decimal form: 40 x 0.01 = 0.4. And because multiplication is commutative, 1% of 40 equals 40% of 1, which is sometimes the easier way to see it in your head.
Mental math shortcut
10% of 40 is 4 (move the decimal one place left), and 1% is 0.4. Build 1% from those pieces: 1 x 0.4 = 0.4.
Nearby percentages of 40
| Percent | Of 40 | 40 minus it | 40 plus it |
|---|---|---|---|
| 2% | 0.8 | 39.2 | 40.8 |
| 5% | 2 | 38 | 42 |
| 6% | 2.4 | 37.6 | 42.4 |
| 10% | 4 | 36 | 44 |
| 15% | 6 | 34 | 46 |
| 20% | 8 | 32 | 48 |
| 25% | 10 | 30 | 50 |
| 30% | 12 | 28 | 52 |
| 50% | 20 | 20 | 60 |
| 75% | 30 | 10 | 70 |
1 percent of other amounts
| Amount | 1% of it |
|---|---|
| 10 | 0.1 |
| 20 | 0.2 |
| 25 | 0.25 |
| 30 | 0.3 |
| 50 | 0.5 |
| 60 | 0.6 |
| 75 | 0.75 |
| 80 | 0.8 |
| 100 | 1 |
| 120 | 1.2 |
Where this comes up
A 1% discount on a 40 price takes off 0.4, leaving 39.6. A 1% tip or tax on 40 adds 0.4, for a total of 40.4. If 40 is a score out of a possible total, 1% of it is the share 0.4 represents. For percent change, reverse percentages, and "X is what percent of Y", use the full percentage calculator.