Recognizing Sig Figs
Sig Fig Operations
Dimensional Analysis
Isolating Variables
Accuracy and Precision
100
The number of sig figs in 0.00201
What is 3
100
The answer to 0.566 + 2.1
What is 2.7
100
The moon is 250,000 miles away. How many feet is it from earth?
1 mile = 5280 feet
What is 1320000000 ft or 1.32 x 109 ft
100
g = 3 + 4a ---solve for a
What is
a=(g-3)/4
100
The definition of accuracy
What is being close to the goal
200
The number of sig figs in 1.0
What is 2
200
The answer to 9.87 x 3.12
What is 30.8
200
How many inches are there in a football field (100 yards)? 1 yard = 3 feet; 1 foot = 12 inches
What is 3600 in.
200
3x = -4v + 4w ---solve for x
What is
x=(-4v+4w)/3
200
The definition of precision
What is being consistent, having values close to one another
300
The number of sig figs in 1000
What is 1
300
The answer to 300.0 + 400.00
What is 700.0
300
How many walking paces are there approximately as you walk down Main Street (0.25 miles)?
1 mile = 5280 feet; 1 foot = 12 inches;
22 inches = 1 walking pace
What is 720 walking paces
300
3zmx = x - 3 --solve for x
What is
x=-3/(3zm-1)
300
For a competitive high school female athlete, the average 5k time is 18.5 minutes. Barbara Lewis, a competitive athlete, gets the following times over the course of a month:
18.0 min., 18.5 min., 18.1 min., 17.0 min., and 17.5 min.
What would you say about Barbara's ACCURACY based on this?
Barbara has low to mid accuracy, with her average time being 17.8 min.
400
The number of sig figs in 1.0012200
What is 8
400
The answer to 7.2 / 0.7
What is 10
400
Houston has approximately 2,210,000 million people. Each person has 2 hands and each hand has 5 fingers. How many fingers are in Houston?
What is 22100000 fingers or 2.21 x 107 fingers
400
g = -16a - 16 + 2b ---solve for a
What is a=(-g-16+2b)/16
400
You measure the boiling point of water in degrees Celsius 3 times, getting:
99.5, 99.6, and 99.8
What would you say about the precision of the above measurements?
What is the measurements have high precision
500
The number of sig figs in 0.002
What is 1
500
The answer to 10.90 - 3
What is 8
500
How many feet are between the first and second story of a building?
1 story = 3.33 meters; 1 inch = 2.54 cm; 1 foot = 12 inches
What is 10.93 ft.
500
z = 2(-3 p - 2n + 3a - 4) ---solve for a
What is
a=(z+6p+4n+8)/6
500
It is expected that you always estimate the final digit in a measurement when taking measurements in lab.
How many decimal places would you record for the following tool?
What is 2 decimal places.