Density
Scientific Notation, Sig Figs, Rounding
Dimensional Analysis
Percent Error
Graphs
100

A rock has a mass of 45 g and a volume of 15 cm3. What is its density?

3 g/cm3

100

How many significant figures are present in 22.05?

4

100

How many minutes are in 3.2 days?

4608 minutes

100

You estimate that 110 customers will attend a special event but 125 actually attend. What is the percent error in your estimate?

12%

100

What is the independent variable in this graph?

Month
200

A marble's volume is 6.5 mL, and the density of the type of glass used to make the marble is 2.5 g/mL. What is the mass of the marble?

16.25 g

200

Convert the following into scientific notation: 0.0302 

3.02 x 10-2

200

What is 8024 inches converted to meters?

12 in = 1 ft 

5280 ft = 1 mi 

3.28 ft = 1 meter 

203.9 meters

200

A student estimates the length of a rope to be 20 feet. After measuring it with a tape measure, the student finds the actual length is 25 feet. What is the percent error of the student's estimate?

20%

200

What is the dependent variable in this graph?

Number of Bicycles Sold

300

If a substance has a mass of 50 grams and a density of 2 g/mL, what would its volume be?

25 mL

300

Round 37432 to 3 SF

37400

300

Convert 22 m/s to mi/hr.

12 in = 1 ft 

5280 ft = 1 mi 

3.28 ft = 1 meter 

49.2 mi/hr

300

A baker needs to measure out 500 grams of flour for a recipe. His scale is slightly off and he measures out 525 grams instead. What is the percent error of his measurement?

5%

300

In which month(s) was the number of bicycles sold 30?

February and April

400

An object has a density of 8 g/mL and displaces 64 mL of water when placed in a tub. What is its mass?

512 g

400

Calculate and correctly round 2.22 x 10.06

22.3

400

A chemist measures the density of an unknown liquid to be 1.52 g/mL. Convert this density to kilograms per m3.

1 kg = 1000 g

1 mL = 1 cm3

1,000,000 cm3 = 1 m3

1520 kg/m3

400

During a lab experiment, a student measures the mass of a substance to be 2.68 g/cm3. The actual value is 2.70 g/cm3. What is the percent error in the student’s measurement?

0.74%

400

What happened to the number of bicycles sold during March to May?

Decreases

500

A student measures a rectangular metal bar on a scale, finding its mass to be 45.9 g. Using a ruler, they measure the bar's dimensions, recording a length of 9.4 cm, a width of 3.7 cm, and a height of 2.4 cm. What is the density of the metal bar?

0.55 g/cm3

500

Calculate and correctly round 10.22 - 6.53

3.69

500

A new coffee shop opens in a busy urban area. On an average day, the shop attracts 215 customers. How many customers can the coffee shop expect to serve in one year?

78,475 people/yr

500

A gardener estimates a plant's height to be 30 centimeters. The plant's actual height is 40 centimeters. What is the percent error of the gardener's estimate?

25%

500

Could we realistically predict what might happen to bicycle sales in October? Why?

Answers may vary.

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