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## Answers

All nonzero digits are significant.

All zeros located between significant digits.

All zeros at the end of the decimal.

All digits of the first factor when a number is expressed in scientific notation.

Underscored or specified zeros of a whole number ending in zeros.

The following are digits that are not significant:

Zeros at the end of a whole number(unless specified to be significant).

Zeros following the decimal point in a number between 0 and 1.