From the point of view of significant figures | vedclass

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(A) In addition and subtraction,the result should be reported to the same number of decimal places as the measurement with the fewest decimal places.$

Vedclass · Accepted Answer

$(ii)$ only

Vedclass · Answer

(A) In addition and subtraction,the result should be reported to the same number of decimal places as the measurement with the fewest decimal places.$(i)\ 11.3 \ cm$ (one decimal place) $+ 4 \ cm$ (zero decimal places) $= 15 \ cm$. Thus,$(i)$ is incorrect.$(ii)\ 4.53 \ m$ (two decimal places) $- 1.2 \ m$ (one decimal place) $= 3.3 \ m$. Thus,$(ii)$ is correct.$(iii)\ 5.45 \ kg$ (two decimal places) $- 3.2 \ kg$ (one decimal place) $= 2.3 \ kg$. Thus,$(iii)$ is incorrect.$(iv)\ 84.8 \ cm$ (one decimal place) $+ 48.6 \ cm$ (one decimal place) $= 133.4 \ cm$. Thus,$(iv)$ is incorrect.Therefore,only $(ii)$ is correct.

From the point of view of significant figures,which of the following is/are correct?
$(i)\ 11.3 \ cm + 4 \ cm = 15.3 \ cm$
$(ii)\ 4.53 \ m - 1.2 \ m = 3.3 \ m$
$(iii)\ 5.45 \ kg - 3.2 \ kg = 2.25 \ kg$
$(iv)\ 84.8 \ cm + 48.6 \ cm = 133 \ cm$

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From the point of view of significant figures,which of the following is/are correct?$(i)\ 11.3 \ cm + 4 \ cm = 15.3 \ cm$$(ii)\ 4.53 \ m - 1.2 \ m = 3.3 \ m$$(iii)\ 5.45 \ kg - 3.2 \ kg = 2.25 \ kg$$(iv)\ 84.8 \ cm + 48.6 \ cm = 133 \ cm$