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1000 has one significant digit (only the 1 is interesting; you don't know anything for sure about the hundreds, tens, or units places; the zeroes may just be placeholders; they may have rounded something off to get this value)

Answer 2:

There is no way to know how many significant digits are in 1000. If you are forced to choose then there is 1 significant digit but, again, there is really no way to tell. If the count of significant digits is important, the number should be expressed in scientific notation.

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9y ago

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More answers

You count the figures after the decimal point but not before it

* * * * *

The correct answer is 4. All digits, other than zeros used as place holders, are significant digits.

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14y ago
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two

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13y ago
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Q: How many significant digits does 100.0 have?
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