Grade 8 · Year 9 · Class 8 · ages 13–14 · Number sense
Scientific notation: Grade 8 practice
Writing large and small numbers as a × 10 to a power. Eight questions at a time, instant feedback and a mastery score from 0 to 100.
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Right answers raise your mastery score (more on harder questions) and wrong ones lower it a little. Your best score is saved on this device, and in your account if you log in.
The idea in one minute
Move the decimal point until there is one non-zero digit in front, and count the moves.
Try these on paper first
One question at each level. Tap a question to see the answer.
Easy 9,100 = 9.1 × 10
Answer: 3
Medium 800,000,000 = 8 × 10
Answer: 8
Challenge 740,000,000 = 7.4 × 10
Answer: 8
More ways to practise scientific notation
- Printable scientific notation worksheet with an answer key (new questions every time)
- All Grade 8 practice · Number sense worksheets
Related skills
- Square roots (Grade 8)
- Cube roots (Grade 8)
- Highest common factor and lowest common multiple (Grade 6)
- Squares and cubes (Grade 5)
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FAQ
Scientific notation: questions
What grade is scientific notation?
It is usually taught in Grade 8 (Year 9 in England, Class 8 in India, ages 13–14), though schools and countries differ. Try the grade above or below if it feels too hard or too easy.
What does a scientific notation question look like?
For example: "800,000,000 = 8 × 10^…" The answer is 8. Move the decimal point until there is one non-zero digit in front, and count the moves.
What should I learn before and after scientific notation?
Before it, try square roots (Grade 8). After it, move on to cube roots (Grade 8).
How can I get better at scientific notation?
Move the decimal point until there is one non-zero digit in front, and count the moves. Practise a little every day, read the hint after each wrong answer, and use the printable worksheet when you want to write it out.
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