MS. Zaruba's 7th Grade Measurement Mini-quiz

Explanation
To fill the 70-gallon bathtub halfway using a 2-quart pitcher, you need to calculate how many times the pitcher can be filled in 70 gallons. Since there are 4 quarts in a gallon, the bathtub contains 70 x 4 = 280 quarts. And since each pitcher can hold 2 quarts, you will need 280 / 2 = 140 pitchers of water to fill the tub halfway.

Explanation
To find out how many cell phones equal one DVD player, we need to convert the weight of the DVD player to ounces. Since there are 16 ounces in a pound, the DVD player weighs 32 ounces. Now, we can divide the weight of the DVD player (32 ounces) by the weight of one cell phone (3.5 ounces) to find the number of cell phones equal to one DVD player. The result is 9.14, which can be rounded down to 8. Therefore, 8 cell phones equal one DVD player.

Explanation
To find the difference in fluid ounces between 2 3/4 pints and 4 1/4 cups, we need to convert the measurements to the same unit. There are 16 fluid ounces in 1 pint, so 2 3/4 pints is equal to 44 fluid ounces. There are 8 fluid ounces in 1 cup, so 4 1/4 cups is equal to 34 fluid ounces. The difference between 44 and 34 is 10, so there are 10 more fluid ounces in 2 3/4 pints than in 4 1/4 cups. Therefore, the answer is 10.

Explanation
There are 36 inches in 1 yard, so to find the number of inches in 2 yards, we multiply 36 by 2. Therefore, there are 72 inches in 2 yards.

Explanation
1000 yards is the greatest in length because it is equivalent to 3000 feet and 36,000 inches. Comparing it to the other options, 1/4 of a mile is equivalent to 440 yards, 1200 feet is equivalent to 400 yards, and 9600 inches is equivalent to 800 feet, which are all smaller measurements than 1000 yards. Therefore, 1000 yards is the greatest in length among the given options.