Vocab
What is uncertainty?
The estimated range of error in a measurement, indicating the degree of doubt associated with a measured value due to limitations of the measuring instrument or process
What do you do to a number if the last digit is less than 5?
Round down.
What is the correct answer using sig fig rules for 4560 + 12?
4570
What is the correct answer using sig fig rules for 3.4 X 27.8?
95
Round to 2 sig figs - 4.825
4.8
Which digit of a measured number is considered uncertain?
The last digit
What do you do when the last digit of a number is greater than 5?
Round up.
What is the correct answer using sig fig rules for 11.27 - 5.881?
5.39
What is the correct answer using sig fig rules for 6600/2.25?
2900
Round to 1 sig fig - 0.0568
0.06
In a graduated cylinder, where do we read the volume of the liquid?
At the bottom of the curve of the liquid
In which math operations do we match the least number of decimal places?
Addition and subtraction
What is the correct answer using sig fig rules for 44.26 + 5.74?
50.00
What is the correct answer using sig figs for 73.82 X 60.2?
4440
Round to 3 sig figs - 5624.8
5620
What is a meniscus?
the curve that forms at the top surface of a liquid in a container
In which math operations do we match the least number of sig figs?
Multiplication and division
What is the correct answer using sig fig rules for 22.82 + (2.21 X 3.04)?
29.54
What is the correct answer using sig figs for (112.52 - 64.388) X 0.23100?
11.12
How many significant figures does 292.785854000 have?
12
What are significant figures?
All the digits in a measured value that are known with certainty, plus one additional estimated digit
What do we do when the last digit of our number is equal to 5?
If the digit to be dropped is equal to 5, we round up or down to make the second to last digit an even number.
What is the correct answer using sig fig rules for 246.24 + 238.278 + 98.3?
582.8
What is the correct answer using sig fig rules for 65.70 / (0.755 + 3.145)?
16.85
How many significant figures does 0.09749000 have?
7