Q2 Matter and Measurement

How many sig figs are there?
27000000

• 2
• 5
• 8

How many sig figs are there?
4000.

• 1
• 3
• 4

Calculate 923 g ÷ 20312 cm³ and give your answer with the correct number of significant figures.

• 0.04 g/cm³
• 0.045 g/cm³
• 0.0454 g/cm³
• 0.05 g/cm³

Calculate 7.987 m - 0.54 m and give your answer with the correct number of significant figures.

• 7.45 m
• 7.447 m
• 7.4 m
• 7.5 m

Calculate 12.47 m ÷ 3.2 s and give your answer with the correct number of significant figures.

• 4 m/s
• 3.9 m/s
• 3.90 m/s
• 3.897 m/s

Calculate 0.020 cm x 50 cm x 11.1 cm and give your answer with the correct number of significant figures.

• 10 cm³
• 11.1 cm³
• 11 cm³
• 11. cm³

Which of the following choices best represents the length reading from the metric ruler pictured?

• 87 mm

• 87.4 mm

• 87.40 mm

• 87.400 mm

Round 0.010229 to four sig figs

• 1022

• 1023

• 0.01023

• 0.01022

Measure the volume of the liquid using the proper number of sig figs.

• 73 mL

• 73.0 mL

• 70.3 mL

• 73.03 mL

You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.

• 25 mg
• 25,000 mg
• 250 mg
• 2500 mg