When adding or subtracting significant figures(sig figs), the answer will be significant to the same number of decimal places as the number with the least number of decimal places used in the calculation.
Example:
12.44+1.6+133.887=147.927 ==>147.9
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When adding or subtracting numbers, the answer should have the same number of decimal places as the measurement with the fewest decimal places. The final answer should be rounded to the least number of decimal places among the numbers used in the calculation. Only the decimal portion of the number is considered when determining significant figures for addition and subtraction.
The smallest significant place of the numbers is rounded in either addition or subtraction (for example: 2.038 +0.12 +0.1 =2.3).
There are some rules for finding significant figures. here there is a problem how many significant figures in 8.00. here in 8.00 have three significant figures. Because after decimal point they may have zeros. but we have to take this as significant figures. There are some rules for finding significant figures. here there is a problem how many significant figures in 8.00. here in 8.00 have three significant figures. Because after decimal point they may have zeros. but we have to take this as significant figures. there are three significant figures because three decimals points these question answering from anjaneyulu
The number 3400 has two significant figures. The rules for significant figures can be found by using the link to our friends at Wikipedia.
In general, the rules for significant figures are: Non-zero digits are always significant. Zeros between non-zero digits are significant. Leading zeros (zeros to the left of the first non-zero digit) are not significant. Trailing zeros in a number with a decimal point are significant; without a decimal point, they may or may not be significant.
The rule for determining significant figures is that all non-zero digits are considered significant, zeros between nonzero digits are significant, trailing zeros in a number with a decimal point are significant, and leading zeros in a decimal number are not significant.
The significant figures in a measurement include all known digits plus one estimated digit. All non-zero digits are considered significant, zeros between non-zero digits are significant, and zeros at the end of a number and after a decimal point are significant.