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How many significant digits are in the length measurement 0.0100 meter?
Three.
How many significant digits are in this 39.0?
Three. All non-zero digits are significant, all zeroes between other digits, and all digits to the right of the decimal. The reason for this is that if this is rounded off, it apparently is rounded off to the nearest tenth, otherwise the tenth place would not be shown. if it were rounded off to the unit, it would read 39, not 39.0 ■
Are all of the digits in the described measurement of 750 mL singnificant?
Integers ending in 0 are ambiguous cases. The measurement could be accurate to the units digit and in that case all three digits are significant. But is could be accurate to the nearest ten, in which case, only the first two digits are significant.
What is 9999 rounded off to three significant digits?
Oh, dude, 9999 rounded off to three significant digits is 10,000. Yeah, I know, we're just moving that decimal point around like it's nobody's business. So, if you're into significant digits and all that jazz, there you have it, 10,000.
How many significant digits are in this number 50.0?
Three significant digits.
