If we add 3.46 and 2.3 we get 5.76.
we can round it to two significant numbers 5.8 because there is the least two significant digit 2.3 but If we add 2.3 X 10^4 + 1.6 X 10^3 = 2.3 X 10^4 + .16 X 10^4 = 2.46 X 10^4. Here can we round off to two significant figures (2.5 X 10^4) because there is also the least two significant digit 2.3 present? Please explain.
we can round it to two significant numbers 5.8 because there is the least two significant digit 2.3 but If we add 2.3 X 10^4 + 1.6 X 10^3 = 2.3 X 10^4 + .16 X 10^4 = 2.46 X 10^4. Here can we round off to two significant figures (2.5 X 10^4) because there is also the least two significant digit 2.3 present? Please explain.