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Directions: The following questions deal with percent of error or percent of change. Read carefully and choose the best answer. Rounding may have occurred in the answers.
1.
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Simon guessed the number of jelly beans in a dish to be 145. There were 205 jelly beans in the dish. What was Simon's percent of error?
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2. |
Cole miscounted the number of kittens in the shelter to be 21, when there were actually 24 kittens. What was Cole's percent of error?
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3. |
Skylar thought her snowboard measured 152 inches in length, when it actually measured 144 inches. What was Skylar's percent of error?
Choose:
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4. |
An object has a mass of 36 grams. On the school balance, it weighs 34.8 grams. What is the percent of error on the school's balance?
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5. |
Anna earned $24 dog walking last week. This week she earned $32 dog walking. What was the percent of change between her earnings last week and those this week?
Choose:
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6. |
The weatherman predicted that the temperature would reach a high of 64º on Monday. The actual high temperature for Monday was 55º. What was the weatherman's percent of error?
Choose:
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7. |
Harley expected her snowmobile club membership fee would be $25. The snowmobile club membership fee was $22. What was Harley's percent of error regarding the fee?
Choose:
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8. |
Tucker bought a bicycle for $75. Several years later, he sold the bicycle for $45. What was the percent of change in the price of the bicycle?
Choose:
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9. |
A bowling ball costs $149.99. Alex thought the bowling ball's cost was $119.99. What the percent of error in the cost?
Choose:
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10. |
As a class experiment, students try to determine how far they can count by twos in 5 seconds. Scott estimates that he can count to 50 in that amount of time. Actually, Scott only counted to 28. What was Scott's percent of error in his prediction? |
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