iReady Lesson 21 Session 4 Review

Math Response

The boiling point of water is 212  F at sea level. Andres lives at an elevation of 7,500 ft. At his home, Andres finds that water boils at 198  F. What is the percent decrease in the boiling point of water from sea level to 7,500 ft? Give your answer to the nearest  tenth of a percent.

Type answer here

Correct Answer: 6.6

Deg^°

Rad

Multiple Choice

Each summer, a school offers a trip to Washington, D.C. Last summer, 80 students signed up for the trip. This summer, 94 students signed up for the trip. To the nearest percent, what is the percent change in the number of students who signed up for the trip?

• 2%

• 14%

• 15%

• 18%

Multiple Choice

Elena uses jars to store her craft supplies. She estimates that each jar will fit 1,000 buttons or 50 large beads. Each jar actually fits
677 buttons or 22 large beads. Does Elena’s estimate for the number of buttons or her estimate for the number of large beads have less percent error?

• The buttons has a lesser percent error

• The large beads has a lesser percent error

Math Response

Most days, Mr. Romano sells umbrellas for $8 each. On rainy days, he increases the price by 75%. How much does he charge, in dollars, for an umbrella on rainy days?

Type answer here

Correct Answer: 14

Deg^°

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Math Response

A student does 50 minutes of homework on Monday and
30 minutes of homework on Tuesday. What is the percent decrease in homework time from Monday to Tuesday?

Type answer here

Correct Answer: 40

Deg^°

Rad