Math Quiz

A class makes 75 chocolate chip cookies for a bake sale. These cookies represent 15% of all the cookies that they make. What is the total number of cookies that the class makes for the bake sale?

Nahia wants to download a file from the internet that has a size of 27 gigabytes (GB). She tests her connection speed and finds that she can download 25 megabytes (MB) per second. There are 1000 MB in 1 GB. How many minutes will it take Nahia to download the 27-gigabyte file?

The number of words Matt and Jason type is proportional to the time they spend typing. The table shows their times for different numbers of words. Which statement is correct?

• Matt types faster than Jason because 300/390 > 360/560.

• Matt types faster than Jason because 300/10 > 360/9.

• Jason types faster than Matt because 300/390 < 360/560.

• Jason types faster than Matt because 300/10 < 360/9.

There are 125 sixth-grade students at a school. - 80% of them are 12 years old. - The remaining sixth-grade students are 11 years old. How many sixth-grade students at the school are 11 years old?

• 20

• 25

• 45

• 100

A factory makes 40 calculators in 30 minutes. How many seconds does it take to make each calculator?

• 45

• 80

• 3/4

• 1 1/3

Jeremy is reading a chapter of a book that is 20 pages long. He has read 14 pages so far. How much of the chapter has he read?

• .30%

• .70%

• 30%

• 70%

Angela can cut 5 patches in 10 minutes to make a quilt. How many minutes will it take Angela to cut 36 patches?

Jeb knows that less than 25% of people who live in cities own a car. Enter a possible rate that Jeb could use to represent people who live in cities and own a car.

Less than 10% of the cars in a parking lot are red. Which rate could represent the parking lot?

• 16 red cars out of 150 cars

• 19 red cars out of 190 cars

• 21 red cars out of 220 cars

• 35 red cars out of 250 cars

Astrid rides her bike 4 miles in 16 minutes. At this rate, how many miles will Astrid ride in 52 minutes?