Significant Figures

Which of the following measurements is expressed to three significant figures?

• 0.007 m

• 
  $7.30\times10^{-7}km$

• 7077 mg

• 0.070 mm

Which of the following measurements contains two significant figures?

• 0.00400 L

• 0.00044L

• 0.00404 L

• 0.00440L

When multiplying and dividing measured quantities, the number of significant figures in the result should be equal to the number of significant figures in ____.

• all of the measurements

• measurement

• the least and most precise measurements the most precise

• the least precise measurement

How many significant figures are in the measurement

0.003 4 kg?

• 2

• 5

• 4

• cannot be determined

How many significant figures does the following number have: 0.002040

• 6

• 3

• 4

• 2

How many significant figures does the following number have: 0.998005

• 9

• 6

• 10

• 5

Round 0.010229 to four significant figures.

• 1022

• 0.01023

• 1023

• 0.01022

Round 1047.78 to three significant figures.

• 104

• 1050

• 105

• 1050.00

What is 78.5 rounded to one significant figure?

• 79

• 70

• 78.5

• 80

What is 98.907 rounded to 1 significant figure?

• 98.9

• 100

• 90

• 98.91