Scientific Notation Calculator › 400 in scientific notation
400 in Scientific Notation
400 = 4 × 10²
| Standard form | 4 × 10² |
| Coefficient | 4 |
| Exponent | 2 |
How 400 breaks down
400 has 3 digits, so it lands in the hundreds — the order of magnitude 10². That is why the exponent is 2.
| Expanded form | 4 × 10 × 10 |
| E-notation (calculators) | 4E2 |
| Significant figures | 1 |
| Order of magnitude | 10² (hundreds) |
Reading it back: 4 × 10 × 10 = 400.
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Frequently asked questions
What is 400 in scientific notation?
400 in scientific notation is 4 × 10². The coefficient is 4 and the exponent is 2.
How do you convert 400 to scientific notation?
Move the decimal point so one non-zero digit stays to its left (giving 4), then count the 2 places you moved it — that is the exponent 2. So 400 = 4 × 10².