How many significant digits does 36.33 have

4 significant digits, decimals=2. All zeroes which are both to the right of the decimal point and to the right of all non-zero significant digits are themselves significant. Here each number is rounded to four, three, and two significant digits. Example: i) 1000 has one significant digit ii) 0.000350 has three significant digits iii) 560 has two significant digits. The last zero is just a placeholder.