Chem Unit 1: Measurements & Intro

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 56.040

• 2
• 3
• 4
• 5

Round 0.010229 to four sig figs

• 1022
• 1023
• 0.01023
• 0.01022

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

How many Significant Figures in the number below?
0.456

• 3
• 4
• 2
• 1

How many significant figures: 0.012 km

• 1
• 2
• 3
• 4

How many significant figures: 450 m

• 3

• 2

• 1

• 0

What is 78.5 rounded to one significant figure?

• 79
• 78.5
• 70
• 80

Solve. Round using SigFig math rules.

103 cm x 11 cm

• 11 cm²

• 1100 cm²

• 1130 cm²

• 1133 cm²

A passenger jet has a speed of 900.0 km/h.

What is its speed in m/s?

• 250.0 m/s

• 324 m/s

• 1,500 m/s

• 2,500 m/s