IBDP AI Practice: Percentage Error, Sig Figs

As the result of experimental work, a student finds the density of a liquid to be 30 g/cm3. The known density of that liquid is 25 g/cm3. What is the percent error of this student’s work?

• 20

• 200

• 2

• 0.02

An object is measured to be 3.12 g.  The accepted value is 4.50 g.  What is the percentage error for this measurement?

• 43.1%
• 30.7%
• 30.666%
• 25.1%

A chemist measured the amount of caffeine in a new energy drink called FlipOUT to be 84.20 mg. The correct amount of caffeine is 87.10 mg. Calculate the percent error.

• 9.6%

• 3.4%

• 3.3%

• 0.033%

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

Round 0.010229 to four sig figs

• 1022
• 1023
• 0.01023
• 0.01022

Tags

CCSS.5.NBT.A.4

Round 1047.78 to three sig figs

• 104
• 105
• 1050
• 1050.00

Tags

CCSS.5.NBT.A.4