- To round to three significant figures, look at the fourth significant figure. It’s a 5 , so round up.
- To round to four significant figures, look at the fifth significant figure. It’s a 1 , so round down.
- To round to two significant figures, look at the third significant figure. It’s an 8 , so round up.
How do you round to significant figures?
- look at the first non-zero digit if rounding to one significant figure.
- look at the digit after the first non-zero digit if rounding to two significant figures.
- draw a vertical line after the place value digit that is required.
- look at the next digit.
What are 3 significant figures examples?
| Example Number of Significant Figures | 0.00682 3 Leading zeros are not significant. | 1.072 4 Imbedded zeros are always significant. | 300 1 Trailing zeros are significant only if the decimal point is specified. | 300. 3 |
|---|
How many decimal places is 3 significant figures?
| Precision Rounded to significant figures Rounded to decimal places | 5 12.345 12.34500 | 4 12.34 or 12.35 12.3450 | 3 12.3 12.345 | 2 12 12.34 or 12.35 |
|---|
What is 1009 rounded to 3 sig figs?
Zeros between non zero digits are significant. E.g. 1009 has
4 significant
figures, 3.02 has 3 significant figures.
How many significant figures does 30.00 have?
30.00 has
4 significant figures
(3, 0, 0 and 0) and 2 decimals. 0.0025 has 2 significant figures (2 and 5) and 4 decimals.
How many significant figures does 1000.0 have?
300.16, 1.0200, and 1,000.0 all contain
5 significant figures
.
What is 1000 to 3 significant figures?
To express a number like 1000 to 2 or 3 significant figures, you need to use scientific notation, for example, “
1.00e3′′
would give you 3 significant figures.
What does 3 decimal places mean?
When you round to the third decimal place, you
‘re rounding to the nearest thousandth
. … That number will be the last digit in the rounded number, and your job is to decide whether to leave it as it is, which is rounding down, or add one unit, which is rounding up. Look at the fourth number in the decimal series.
How many significant figures does 1000000 have?
1,000,000 has only
1 sig
.
How many significant figures does 1200 have?
1200 has
2 significant figures
. 0.025 has 2 significant figures.
How do you round to 2 decimal places?
- look at the first digit after the decimal point if rounding to one decimal place or the second digit for two decimal places.
- draw a vertical line to the right of the place value digit that is required.
- look at the next digit.
- if it’s 5 or more, increase the previous digit by one.
How many significant figures does 2001800 have?
| 6 2001800 2.00180 × 106 | 5 2001800 2.0018 × 106 | 4 2002000 2.002 × 106 | 3 2000000 2.00 × 106 | 2 2000000 2.0 × 106 |
|---|
How many significant figures does 0.50 have?
| Number Scientific Notation Significant Figures | 0.003 3.0×10 – 3 1 | 0.900 9.0×10 – 1 3 | 0.50 5.0× 10 – 1 2 | 0.00120 1.2×10 – 3 3 |
|---|
How many significant figures does 37.0 have?
Zeros will count when they are trapped by nonzero digits like in 4509 (4 sig figs) or when the zeros follow both the decimal and the nonzero digits like in 37.0 or . 370 (both with
3 sig figs
).
How many significant figures are there in 5000?
When written 5000. there are
four significant digits
while 5000 could contain one, two, three, or four significant digits. The nomber of significant figures used implies a certain maximum error range.
