How many significant figures does 4.0 have?

Answer 1

4.0 has two significant figure.

Significant figures are worked out by finding the first number (working left to right) that is not zero. after finding this number count the number of figures that are shown including zero's

Answer 2

Rounding a number to four signifcant figures means only writing the first 4 digits after the decimal point.

For example, rounding 4.593824453 to 4 significant figures would be 4.5938.

Answer 3

Four.

Answer 4

2

Answer 5

4