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 ■
Two. The zero is just a placeholder.
Five. All nonzero digits are significant and zeros in between significant digits are significant.
Three significant digits.
This number has seven significant digits.
There are five significant digits.
Two. The zero is just a placeholder.
4
It has two significant digits.
3 significant digits.
It has 3 significant digits.
Five. All nonzero digits are significant and zeros in between significant digits are significant.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
000203 has 3 significant digits.
Three significant digits.
This number has seven significant digits.