Find the value of 31.2 -12.125with due consideration of significant fi

1.	Find the value of 31.2 -12.125with due consideration of significant figures.
Answer» SOLUTION :`31.2-12.125` Here `31.2` has ONE DECIMAL place, HENCE `12.125`is to be rounded off to `1+1=2`decimal places `12.125`is rounded off as `12.12` `:. 31.2-12.12=19.08` finally we should have only one decimal place and hence `19.08`ISTO be rounded off as `19.1`.

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