Sig Figs/Uncertainty Practice

Answer with the correct number of significant figures.

13.023x123.1 = __________. 

• 1603.1313

  (8 significant figures)

• 1603.1

  (5 significant figures)

• 1603

  (4 significant figures)

• 1603.13 (6 significant figures)

How many significant numbers are there in 2.1390?

• 4

• 5

• 6

• 7

How many significant numbers are there in 4.150 x 10^-4?

• 1

• 2

• 3

• 4

•  

  How many significant numbers are there in 678.02400?

• 5

• 6

• 7

• 8

• 
  How many significant numbers are there in 0.002?

• 1

• 2

• 3

• 4

1. 100,000.0

• 3 sig figs

• 5 sig figs

• 7 sig figs

• 9 sig figs

1. Round the following number to 3 sig figs:

2. 234,555,359

• 235,000,000.

• 1. 234,000,000

• 1. 235,000,000

• 1. 234,600,000

L = 6.0 ± 0.1 cm

What is the percent uncertainty?

• 6.0 ± .017 % cm

• 6.0 ±(0.1/6.0) %

• 6.0 ± 1.7 %

• 6.0 ± 7.1 %