The rule is - whatever number of decimal places you're rounding off to - look at the NEXT number...
For example - round 23.456 to two decimal places. The number in the THIRD decimal place is 5 or more so you round UP to get 23.46.
IF the number had been 23.454, you would round DOWN to yield 23.45.
There are 2 or 3 significant figures. It could be 894° rounded to 2 significant figures; It could be 889.6° rounded to 3 significant figures.
188,100 rounded to two significant figures is 190,000
There are two types of significant figures, measured and exact. Numbers are often rounded to avoid reporting insignificant figures. Numbers can also be rounded merely for simplicity rather than to indicate a given precision of measurement.
To one significant figure 7 Rounded off to two significant figures (tenths in your example) 7.4
Expressed as a decimal, rounded to three significant figures, 9/981 = 0.00917
When adding numbers, the result should be rounded to the same number of decimal places as the number with the fewest decimal places. This ensures that the final answer has the appropriate number of significant figures.
When adding or multiplying numbers with significant figures, the result should be rounded to the least number of decimal places in the original numbers. For addition, the result should have the same number of decimal places as the number with the fewest decimal places. For multiplication, the result should have the same number of significant figures as the number with the fewest significant figures.
When performing mathematical operations with significant figures, the result should be rounded to the least number of decimal places in the original numbers. Addition and subtraction should be rounded to the least number of decimal places, while multiplication and division should be rounded to the least number of significant figures.
There are 2 or 3 significant figures. It could be 894° rounded to 2 significant figures; It could be 889.6° rounded to 3 significant figures.
188,100 rounded to two significant figures is 190,000
significant figures in the original numbers used in the calculation. This means the final answer should be rounded to the same number of significant figures as the number with the least amount of significant figures.
When adding numbers, the result should be rounded to the same number of decimal places as the number with the fewest decimal places. This ensures that the final answer is accurate and reflects the precision of the original numbers.
Exactly what you typed. 144.78 rounded to 2 decimal places is 144.78. You may mean significant figures, in which case it would be 1.4*10^3 (2 significant figures).
There are two types of significant figures, measured and exact. Numbers are often rounded to avoid reporting insignificant figures. Numbers can also be rounded merely for simplicity rather than to indicate a given precision of measurement.
11.0 (one decimal and 3 significant figures)
When adding or subtracting numbers, the result should be rounded to the least number of decimal places present in the original numbers. In this case, 102.5 ml has 3 significant figures and 6.55 ml has 3 significant figures, so the answer should be rounded to 1 decimal place as 109.1 ml.
When adding or subtracting numbers, the result should have the same number of decimal places as the least number of decimal places in the original numbers. This is because in these operations, you are limited by the least precise measurement. Significance figures don't matter in addition or subtraction, only decimal places.