Dang Those Tricky Zeros!
Adding/Subtracting
Multiplication/Division
Keep it Basic: How many?
Density & Percent Error
100
5004
What is 4 significant figures?
100
2+2
What is 4?
100
2x3
What is 6?
100
2
What is 1 significant figure?
100

Calculate the density of an object with a mass of 30.0g and a volume of 2.0mL

15g/mL

200
140
What is 2 significant figures?
200
12.1+4.2
What is 16.3?
200
12.1 x 2.00
What is 24.2?
200
45.8
What is 3 significant figures?
200

Calculate the mass of an object with a density of 5.434g/mL and a volume of 2.30mL

12.5mL

300
7,500,000,001
What is 10 significant figures?
300
10.5+9.99
What is 20.5?
300
10 x 82
What is 800?
300
2.012
What is 4 significant figures?
300

A student measured the density of an object to be 7.89g/mL. The accepted value is 7.41g/mL. What is the student's percent error?

6.5%

400
12.0000
What is 6 significant figures?
400
5.87+55.51
What is 61.38?
400
14 / 12
What is 1.1?
400
450,000,001
What is 9 significant figures?
400

Calculate the volume of an object with a density of 40.32g/mL and a mass of 39g.

1.0mL

500
2.0050010
What is 7 significant figures?
500
5.87149+8.2486147893545
What is 14.12010?
500
5.478 / 8.47836
What is 0.6461?
500
458.00000
What is 8 significant figures?
500

A student found the density of silver to be 9.54g/cm3. What is the student's percent error?

9.14%

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