The rules for identifying significant figures when writing or interpreting numbers are as follows:
All non-zero digits are considered significant. For example, 91 has two significant figures (9 and 1), while 123.45 has five significant figures (1, 2, 3, 4 and 5).
Zeros appearing anywhere between two non-zero digits are significant. Example: 101.1203 has seven significant figures: 1, 0, 1, 1, 2, 0 and 3.
Leading zeros are not significant. For example, 0.00052 has two significant figures: 5 and 2.
Trailing zeros in a number containing a decimal point are significant. For example, 12.2300 has six significant figures: 1, 2, 2, 3, 0 and 0. The number 0.000122300 still has only six significant figures (the zeros before the 1 are not significant). In addition, 120.00 has five significant figures since it has three trailing zeros.
To determine the number of significant figures in the product of 223.4 and 7.5, we first identify the significant figures in each number. The number 223.4 has four significant figures, while 7.5 has two significant figures. The result should be reported with the same number of significant figures as the measurement with the least significant figures, which is 7.5 in this case. Therefore, the final answer should have two significant figures.
Because you haven't told us what the measurement is.
To round the number 1127436092 to four significant figures, identify the first four significant digits, which are 1127. The next digit is 4, which is less than 5, so you do not round up. Therefore, the number rounded to four significant figures is 1127000000.
To simplify the expression 656.65 using significant figures, we first identify the significant figures in the number. The digits 6, 5, and 6 are all significant, as is the 6 in the hundredths place, giving us a total of five significant figures. If we were to round this number to three significant figures, it would become 657, as the digit following the third significant figure (the second 6) rounds it up.
To round 6767.5 to three significant figures, we identify the first three significant digits, which are 6, 7, and 6. The next digit (7) indicates that we round the last significant digit (6) up to 7. Therefore, 6767.5 rounded to three significant figures is 6770.
To determine the number of significant figures in the product of 223.4 and 7.5, we first identify the significant figures in each number. The number 223.4 has four significant figures, while 7.5 has two significant figures. The result should be reported with the same number of significant figures as the measurement with the least significant figures, which is 7.5 in this case. Therefore, the final answer should have two significant figures.
To determine the number of significant figures in the product of 0.1400, 6.02, and (10^{23}), we need to identify the significant figures in each number. The number 0.1400 has four significant figures, 6.02 has three significant figures, and (10^{23}) has one significant figure (as it is a power of ten). The product will have the same number of significant figures as the term with the least significant figures, which is 6.02 with three significant figures. Therefore, the final product will have three significant figures.
Because you haven't told us what the measurement is.
To round the number 1127436092 to four significant figures, identify the first four significant digits, which are 1127. The next digit is 4, which is less than 5, so you do not round up. Therefore, the number rounded to four significant figures is 1127000000.
To simplify the expression 656.65 using significant figures, we first identify the significant figures in the number. The digits 6, 5, and 6 are all significant, as is the 6 in the hundredths place, giving us a total of five significant figures. If we were to round this number to three significant figures, it would become 657, as the digit following the third significant figure (the second 6) rounds it up.
To round 6767.5 to three significant figures, we identify the first three significant digits, which are 6, 7, and 6. The next digit (7) indicates that we round the last significant digit (6) up to 7. Therefore, 6767.5 rounded to three significant figures is 6770.
To express 1602 to 2 significant figures, you identify the first two non-zero digits, which are 1 and 6. Rounding the number, it becomes 1600. Thus, 1602 correct to 2 significant figures is 1.6 × 10^3.
Yes, when multiplying several quantities, the final answer should contain the same number of significant figures as the quantity with the least significant figures. This rule ensures that the precision of the result reflects the least precise measurement involved in the calculation. Thus, it's important to identify and limit the final answer based on the measurement with the smallest significant figures.
To determine the number of significant figures in a measurement, you need to consider all non-zero digits, any zeros between significant figures, and trailing zeros in a decimal number. However, without specific measurements provided, I can't give an exact count. If you provide the underlined measurements, I can help you identify the significant figures in each.
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 significant figures.
There are 4 significant figures in 0.0032. Seems to be only 2 significant figures in this number.