Forget about "significant figures"; those are used to determine the precision when you multiply or divide. When adding numbers, the rule is that the result should be rounded according to the precision of the least accurate of the addents. In this case, to one decimal digit.
When adding and/or subtracting, your answer can only show as many decimal places as the measurement having the fewest number in the decimal places.
There are five significant figures in the given value. It is according to the rule of significant figures which say that zeros right to the decimal point are significant and all non zero digits are significant So , all the digits in the given value are significant figures i.e 5 significant figures.
There are 2 because of the leading zeros rule. Zeros at the beginning of a number are never significant.
The main disadvantage is that in may cases the level of precision is limited to three significant figures.
Forget about "significant figures"; those are used to determine the precision when you multiply or divide. When adding numbers, the rule is that the result should be rounded according to the precision of the least accurate of the addents. In this case, to one decimal digit.
When adding and/or subtracting, your answer can only show as many decimal places as the measurement having the fewest number in the decimal places.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
There are five significant figures in the given value. It is according to the rule of significant figures which say that zeros right to the decimal point are significant and all non zero digits are significant So , all the digits in the given value are significant figures i.e 5 significant figures.
the decimal place in the quotient or product should be based in the decimal place of the given with the least significant figures
Take the least number of decimal places when adding or subtracting, therefore the answer is 17 to no decimal places.If it was 14 x 3.078 the answer would be 43 to 2 significant figures. The rule for multiplication/division is to use the least number of sig figs in the components: 14 has 2 and 3.078 has 4 so the answer should use 2.
There are 2 because of the leading zeros rule. Zeros at the beginning of a number are never significant.
The significant figures are the first four non-zero digits - with the last of these adjusted if the following digit is 5 or more. [This is the crude school rule rather than the bias-free, IEEE approved rule.] So the answer is 2231000.
When adding or subtracting measurements, the result should be rounded to the least number of decimal places of any measurement involved in the calculation. This is to maintain the same level of precision as the least precise measurement.
The final answer should have three significant figures as dictated by the measurements provided (10.04 grams and 8.21 cubic centimeters). The result of the calculation cannot have more significant figures than the least precise measurement.
If the zeros are significant figures then 900 is correct to 3 significant figures. If rounding off has occurred then the answer could be 1 sf or 2sf. For example : If the original number was 903 and rounding off to the nearest ten was required then 900 is correct to 2 significant figures. If the number was 927 and rounding off to the nearest hundred was required then 900 is correct to 1 significant figure.
The main disadvantage is that in may cases the level of precision is limited to three significant figures.