Accuracy V. Precision, Sig Figs, And Scientific Notation

How many significant figures are in the measurement 40,500 mg?

• four
• five
• three
• two

Which group of measurements  is the most precise? (Each group of measurements is the same object)

• 2.0 g, 3.0 g, 4.0 g
• 1 g, 3 g, 5 g
• 2.08 g, 2.54 g, 3.00 g
• 2 g, 3 g, 4 g

In the measurement 0.503 L, which digit is the estimated digit?

• 5
• 3
• the 0 immediately to the left of the 3
• the 0 t the left of the decimal point

How many significant figures are in the measurement 811.40 grams?

• two
• three
• four
• five

How many significant figures are in the measurement 0.003 4 kg?

• This cannot be determined
• two
• four
• five

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

How many significant figures does the following number have: 0.998005

• 9
• 10
• 6
• 5

How many significant figures does the following number have: 100.00210

• 7
• 5
• 10
• 8

How many significant figures does the following number have: 2001800.

• 1
• 4
• 6
• 7

Round 0.010229 to four sig figs

• 1022
• 1023
• 0.01023
• 0.01022