Significant Figures and Scientific Notation

How many significant figures does the following number have: 0.002040?

• 6

• 4

• 3

• 2

John is a scientist and he recorded a measurement as 0.998005 in his experiment. How many significant figures does this measurement have?

• 9

• 10

• 6

• 5

Determine the number of significant figures in 10 L.

• 4

• 3

• 2

• 1

Determine the number of significant figures in 13410000 m.

• 4

• 3

• 2

• 1

Calculate 5.50 cm + 5.5 cm and give your answer with the correct number of significant figures.

• 11 cm
• 11.0 cm
• 11.00 cm
• 11.000 cm

Express 23400 in proper scientific notation.

• 2.34 x 10⁴

• 2.3 x 10³

• 2.30 x 10⁵

• 2.34 x 10³

What is 78.5 rounded to one significant figure?

• 79
• 78.5
• 70
• 80

Calculate 1.23 m x 0.89 m and give your answer with the appropriate number of significant figures.

• 1.0 m²

• 1.1 m²

• 1.0947 m²

• 1.09 m²

Calculate 12.34 + 1.234 + 0.1234. Use only sig fig in your answer

• 13.6974

• 13.697

• 13.70

• 13.7

What is the result of 1345.567 divided by 23.56? (Use significant figures!)

• 57.11

• 58.11

• 56.75

• 83.49