Scientific Notation Practice — Both Directions (Free)
Practice scientific notation in both directions with this free tool. It asks you to write numbers in scientific notation and to expand them back to standard form, checking your answer instantly and showing how the decimal point moves.
How the practice works
- Pick a difficulty.
- Convert the number and press Check.
- Read the feedback and step-by-step solution, then press Next.
What scientific notation is
Scientific notation writes a number as a × 10n, where 1 ≤ |a| < 10. Moving the decimal point left gives a positive exponent; moving it right gives a negative one. The solution panel counts the places for you.
Frequently asked questions
How do you write a number in scientific notation?
Move the decimal so one nonzero digit is in front of it; the number of places moved is the exponent (negative for small numbers).
Does it go both directions?
Yes — standard to scientific and scientific back to standard.
Is it free?
Yes — unlimited problems, no sign-up, with progress saved in your browser.
Read the full lesson: learn the method step by step.
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