To express 124.683 with one significant digit, we round it to the nearest ten. The first significant digit is '1' in the hundreds place, so we round 124.683 to 100.
3
The 1 and the 2
To one significant digit, 37.19 is 4x101. Writing it as 40 makes it unclear as to whether you have 1 significant digit or 2.
To express 961 to one significant figure, you round it to the nearest significant digit. The first significant digit in 961 is 9, and since the next digit (6) is 5 or greater, you round up. Therefore, 961 rounded to one significant figure is 1000.
The number 0.001 has one significant figure. The leading zeros before the digit "1" are not counted as significant figures, as they only serve to position the decimal point. Therefore, only the digit "1" is considered significant in this case.
3
The 1 and the 2
To one significant digit, 37.19 is 4x101. Writing it as 40 makes it unclear as to whether you have 1 significant digit or 2.
They all have 1 as the first digit.
Just the one and it is the digit 1
Three of them which are 1, 0 and 2
When rounding to 1 significant figure, we look at the first non-zero digit from the left. In this case, the first non-zero digit is 6. Since the digit immediately following it is less than 5, we round down. Therefore, 0.006772 rounded to 1 significant figure is 0.006.
Well, in science you always need significant digits: 0 has no significant digits, so we round to the nearest number with 1 significant digit: namely, -1 or 1.
There is one significant figure in 0.00001, which is the non-zero digit 1.
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.
4 All of them are significant. Only zeros are potentially insignificant. And that's only when your numbers either start with zeros like 0.001 (1 significant digit 1) or end with zeros 13.0000 (2 significant digit, 13). Any zeros between non-zero numbers are significant.
849 to 1 significant figure is 800. This is because the first non-zero digit is 8, so the significant figure is the hundreds place.