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Scientific Notation Arithmetic
Add, multiply or divide two exact decimal values and round to significant digits.
Two explicit decimal or scientific-notation operands, Operation and significant-digit count
scientific-arithmetic.json
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How to use this tool
- Enter two decimal or scientific-notation values and choose addition, multiplication or division.
- Choose 1 through 50 significant digits.
- Calculate and download the exact fraction, normalized display and rounding report.
Examples
1e3 plus 2e2 has exact value 1200, shown as 1.20e3 at three significant digits.
Limitations
- Each raw operand has at most 128 units, 100 coefficient digits and written exponent from -1000 through 1000. At most 4096 combined control units, 4096 intermediate digits, 64 KiB output and 30 seconds.
- Division by zero refuses. Exact fractions are retained for repeating results; rounded scientific displays are not presented as exact values.
- Rounding is half away from zero with exponent carry. Requested significant trailing zeros are retained; exact zero is shown as 0e0.
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