It is 124.68 rounded to 5 significant figures
5, the only thing that is not considered a sign digit is a leading zero EG: 0.456 it will have 3 sign digit the 0. doesnt count as a sign digit
Zero is considered a significant digit when it is to the left or the right of the decimal point. It is also a significant digit when it follows a non-zero digit or when it is between two digits.
125
The speed of light in vacuum is defined to be exactly 299,792,458 meters per second. Exact quantities have an infinite amount of significant digits. To reduce the expression to 2 significant digits, we take only the first two digits starting at the leftmost digit as accurate and round the quantity represented by the first 2 digits in their place value up if the third digit is greater than 5 or down if the third digit is less than 5. The reason for doing this is that we want the result to be the closest number of the two possible choices to the original value. For this reason, if the third digit is 5, consider the value of the fourth digit instead, as this will tell you whether rounding up or rounding down will give you the closest number. If the fourth digit and all the rest of the digits are 0, then both rounding up and rounding down are the same distance from the original number, and it is up to your local convention which one you choose to do. For this number, the first two digits, keeping their place value, gives us the number 290,000,000 meters per second. The third digit in the original number is 9, so we round 290,000,000 up to 300,000,000 meters per second. It is difficult to tell how many digits are significant in standard notation, so most publications use scientific notation. We would write it as 3.0x10^8 meters per second instead, where we explicitly write 2 significant digits including the significant 0 as the multiple of 10^8.
3 significant figures. (The zero after the 5 doesn't count.) 4 significant figures if the zero after the 5 does count. A good way of expressing three thousand four hundred fifty with three, four, or five significant figures is with scientific notation: 3.45 * 103 3.450 * 103 3.4500 * 103
The first significant digit is the 5, which is in the ten-thousandth's position.
All digits are significant in this case. Any digit after a decimal point is a significant digit.
The 5.
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
When the last digit of a significant digit is 5 and we need to round it, we follow a rule called "round half up". This means that we round the digit up to the nearest number if the digit before it is odd, and round down if it's even. For example, 2.5 would round up to 3, while 3.5 would also round up to 4.
When rounding 5555 to 2 significant figures, we start counting from the leftmost non-zero digit. In this case, the leftmost non-zero digit is 5. The next digit after 5 is 5, which is greater than or equal to 5, so we round up the leftmost non-zero digit. Therefore, 5555 rounded to 2 significant figures is 5600.
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.
5, the only thing that is not considered a sign digit is a leading zero EG: 0.456 it will have 3 sign digit the 0. doesnt count as a sign digit
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
To correct to 4 significant figures, you need to round the number to have four digits starting with the first non-zero digit from the left. If the fifth digit is 5 or more, round up the last remaining digit. If it's less than 5, keep the digit as it is.
Three significant figures. The two zeroes after the digit 5 are irrelevant.