SL 1.1—Scientific notation
- Syllabus
- First assessment 2021
- Objective
- —
- Level
- HL
Normalize a number into scientific notation.
Move the decimal point until the coefficient is at least 1 and less than 10; the number of places becomes the integer exponent.
Worked example
0.00052 = 5.2 × 10⁻⁴ because the decimal moves four places right.
Worked example
Write 7.1 × 10⁵ as an ordinary number. 710000; a positive exponent moves the decimal right.
Common boundary
E notation on a calculator is a display format, not the required written form.