123456789 Josh Griff
The number whose farthest right significant digit determines it. Whatever place that digit is in is the last significant digit in the sum. For example: 433 + 150 + 3.67 + 8000 = 8586.67, but in sig figs this is only 9000, as the thousands digit is the lowest digit that can be represented.
All digits are significant in this case. Any digit after a decimal point is a significant digit.
The 7
It is the digit 2
Three significant figures. The two zeroes after the digit 5 are irrelevant.
It is 124.68 rounded to 5 significant figures
Accurately known digits along with first doubtful digit are called significant figures.
When rounding 5.05 to two significant figures, we first identify the two most significant digits, which are the 5 and the 0. The digit following the last significant digit is 5, which is equal to or greater than 5, so we round the last significant digit up by 1. Therefore, 5.05 rounded to two significant figures is 5.1.
Every digit in 40.725 is significant, so there are 5
Starting at the second digit after the decimal, if it is between 0 and 4, you round the first digit down. If it is between 5 and 9, you round it up. If the third digit is between 0 and 4, you round the second digit down. If it is between 5 and 9, you round the second digit up. Rounded to.......... 1 signifcant figure: .3 2 significant figures: .29 3 significant figures: .294 4 significant figures: .2943 5 significant figures: .29430
There are three significant figures in 25.0 because the trailing zero is not a placeholder digit. ~foxy
2 significant figures.