Percent error of an estimate or measurement
7th grade (Year 8 in England) · 16 questions · Common Core: 7.RP.A.3 · England: KS3 Number
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Date
Score/ 16
Question 1
A ruler measurement gave 45 cm for an object that is really 48 cm long. What is the percent error? Round to 1 decimal place.
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Question 2
Nia estimated there were 285 people at a concert. There were actually 300. What is the percent error?
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Question 3
A ruler measurement gave 39 cm for an object that is really 43 cm long. What is the percent error? Round to 1 decimal place.
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Question 4
Hiro estimated there were 448.5 people at a concert. There were actually 390. What is the percent error?
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Question 5
A ruler measurement gave 43 cm for an object that is really 41 cm long. What is the percent error? Round to 1 decimal place.
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Question 6
Elena estimated there were 168 people at a concert. There were actually 210. What is the percent error?
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Question 7
A ruler measurement gave 84 cm for an object that is really 90 cm long. What is the percent error? Round to 1 decimal place.
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Question 8
Lucia estimated there were 207 people at a concert. There were actually 180. What is the percent error?
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Question 9
A ruler measurement gave 77 cm for an object that is really 83 cm long. What is the percent error? Round to 1 decimal place.
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Question 10
Ravi estimated there were 110.5 people at a concert. There were actually 130. What is the percent error?
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Question 11
A ruler measurement gave 47 cm for an object that is really 43 cm long. What is the percent error? Round to 1 decimal place.
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Question 12
Amara estimated there were 152 people at a concert. There were actually 160. What is the percent error?
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Question 13
A ruler measurement gave 33 cm for an object that is really 35 cm long. What is the percent error? Round to 1 decimal place.
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Question 14
Elena estimated there were 322 people at a concert. There were actually 280. What is the percent error?
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Question 15
A ruler measurement gave 84 cm for an object that is really 87 cm long. What is the percent error? Round to 1 decimal place.
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Question 16
Elena estimated there were 37.5 people at a concert. There were actually 50. What is the percent error?
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