percent error, precision, accuracy, significant figures

Find the percent error. You estimate that you sent 135 texts last week but when you get the bill it was actually 108. 

• (135 - 108)/135 = 20%
• (135 - 108)/108 = 25%
• (108 - 135)/135 = -20%
• (108 - 135)/108 = -25%

Tags

CCSS.6.RP.A.3C

An archaeologist estimated that a fossil was 520 years old. It was actually 500 years old. What was the percent error?

• 4%
• 20%
• 3.8%
• none of these

• Student A
• Student B
• Student C
• Cannot be determined

• Student A
• Student B
• Student C
• Cannot be determined

How many sig figs are there?
100.00

• 1
• 3
• 4
• 5

Tags

CCSS.8.EE.A.3

How many sig figs are there?
100000000

• 1
• 9
• 10

How many sig figs are there?
0.000008

• 1
• 2
• 6
• 7

Tags

CCSS.8.EE.A.4

How many sig figs are there?
0.00400

• 1
• 3
• 5
• 6

Tags

CCSS.8.EE.A.4

How many sig figs are there?
0.0009009090000

• 3
• 10
• 14

Tags

CCSS.8.EE.A.4

What is 0.658 rounded to 1 significant figure?

• 0
• 0.66
• 0.7
• 0.658

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3