Sample question 3 asked students to read a scale on a number line presented in the context of a bicycle speedometer. To answer the question, the student had to determine the value corresponding to a point halfway between the points marked at 10 and 20 miles per hour.
85 percent of 9yearolds answered this question correctly.

The bicycle speedometer above shows about what speed?

10 miles per hour


15 miles per hour


20 miles per hour


45 miles per hour

The correct answer is B.
See more about this question in the NAEP Questions Tool.