Grade 7 | Unit 4 | Lesson 15: Error Intervals | Practice Problems

What is the smallest the actual height of the plant could be?

How large could the percent error in Jada’s measurement be?

• Approximately 2.6%

• Approximately 1.3%

• Approximately 0.8%

• Approximately 3.4%

The reading on a car’s speedometer has 1.6% maximum error. The speed limit on a road is 65 miles per hour. The speedometer reads 64 miles per hour. Is it possible that the car is going over the speed limit?

• Yes, it might be going more than 65 mph as it could be going 65.024 mph.

• No, it cannot be going over 65 mph.

• Yes, but it can also be going less than 65 mph.

• No, it will be exactly 64 mph.

The speedometer reads 66 miles per hour. Is the car definitely going over the speed limit?

• Yes, it is definitely over the speed limit.

• No, it might be going as slow as 64.944 mph.

• No, it's definitely under the speed limit.

• Yes, but it can also be less.

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Noah picked 3 kg of cherries. Jada picked half as many cherries as Noah. How many total kg of cherries did Jada and Noah pick?

Here is a shape with some measurements in cm. Complete the table showing the area of different scaled copies of the triangle. Is the relationship between the scale factor and the area of the scaled copy proportional?

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