Find the sum `0.23 + 0.234 + 0.2345` corrected to three significant figures.

The significant figures of 0.007 is

Evaluate (0.304) (0.12) corrected to four significant figures.

Find the significant figures in 0.06900

Round off 0.1525 upto three significant figures

Round off 0.1525 upto three significant figures

Round off 0.1525 upto three significant figures

Evaluate 2.304xx23.05 correct to four significant figures.

Evalute (i) 6.02 + 3.7602 - 0.9327 , correct to four significant figres. (ii) 0.529 -42.78 + 70.062 correct to three significant figures.

Value of 0.072 correct to 1 significant figure is "_______" .