Odds and Ends
Scientific Notation
Significant Figures
SN + SF
Conversions
100

What is the equation for density?

D= m/v

100

What is the rule for adding or subtracting numbers in scientific notation?

Must make the exponents the same

100

How many significant figures are in 4570

3

100

How many sig fig are in 3.00 x 10-3

3

100

Convert 3.4 kilograms to grams.

3,400 grams

200

Draw accuracy vs precision on the whiteboard  

200

What are the rules for multiplying and dividing in scientific notation?

M: Multiply coefficient, add exponents

D: Divide coefficient, and subtract exponents 

200

How many significant figures are in 43,000.00

7

200

Round 4.7654 x 10to 3 sig fig 

4.77 x 105

200

how many hours are in a year?

8,760 hours

300

Calculate percent error

Experimental: 24.3 mL

Accepted 26.2 mL 

7.25%

300

(5.0 x 105) + (2.0 x 104)

5.2 x 105

300

Round 64,343,450,345 to 4 sig fig

64,340,000,000

300

(5.3 x 103) + (3.5 x 102)

5.7 x 103

300

Convert 650 Liters to deciliters.

6,500 dL

400

Convert 32 degrees celsius to degrees kelvin.

305 degrees kelvin

400

(2.0 x 10-5)+(67.3 x 10-7)

2.673 x 10-5

400

Report answer with correct number of sig fig

4.5 +6.345=

10.8

400

(4.2 x 10-5) - (20.0 x 10-7)

4.0 x 10-5

400

Convert 145 lbs to grams

2.2 lbs=1 kg

65,909.1 grams

500

Calculate the density:

mass: 5400 mg (must convert to grams)

volume: 2 cm3

5400mg is 5.4 grams

5.4/2 = 2.7 g/cm3

500

(5.0 x 105) x (4.0 x 103)

____________________

          2.0 x 102

20.0 x 108

__________     =        10.0 x 106

2.0 x 102

500

12.5 x 2.000=

25.0

500

(5.00 x 104) x (2 x 103)

10 x 107

500

Convert 2 miles to cm

1mi =5280 ft

1 in = 2.54 cm

321,868.8 cm

or

3.2 x 105