Measurement and Conversions Flashcards

A flight is scheduled to take 330 minutes. How long is the flight in hours and minutes?

Answer: 5 hours and 30 minutes

To convert minutes to hours, divide the total number of minutes by 60. 330 divided by 60 is 5 with a remainder of 30. This means the flight is 5 full hours and 30 additional minutes.

Which of the following weights is the greatest?

Answer: 0.003 metric tons

To accurately compare the weights, they must be converted to a common unit. Converting all options to grams: 2,500 grams remains the same; 0.003 metric tons is 3,000 grams (since 1 metric ton = 1,000 kg and 1 kg = 1,000 g); 2 kilograms is 2,000 grams; and 20,000 milligrams is 20 grams. Therefore, 0.003 metric tons (3,000g) is the greatest weight.

A carpenter has a wooden plank that is 3.5 yards long. If they cut off a piece that is 4 feet long, how many feet of plank are left?

Answer: 6.5 feet

First, convert the total length of the plank to feet. Since there are 3 feet in a yard, 3.5 yards is equal to 3.5 × 3 = 10.5 feet. Then, subtract the length of the piece that was cut off: 10.5 feet - 4 feet = 6.5 feet.

A recipe for soup makes 8 servings, with each serving being 250 milliliters. If you want to store the entire batch of soup in a single container, what is the minimum capacity the container must have?

Answer: 2 Liters

First, find the total volume of soup by multiplying the number of servings by the volume per serving: 8 × 250 mL = 2,000 mL. Next, convert milliliters to liters. Since there are 1,000 milliliters in 1 liter, divide the total milliliters by 1,000: 2,000 mL ÷ 1,000 = 2 Liters.

A rectangular room measures 12 feet by 15 feet. What is the area of the room in square yards?

Answer: 20 square yards

There are two ways to solve this. You can first calculate the area in square feet (12 ft × 15 ft = 180 sq ft) and then divide by 9 (since 1 sq yard = 9 sq ft) to get 20 square yards. Alternatively, you can convert the dimensions to yards first (12 ft = 4 yards, 15 ft = 5 yards) and then multiply them (4 yd × 5 yd = 20 sq yd).

A car is traveling at a constant speed of 60 miles per hour. How many feet will the car travel in 10 seconds? (Note: 1 mile = 5,280 feet)

Answer: 880 feet

First, convert the speed from miles per hour to feet per second. The car travels 60 miles in one hour, which is 60 × 5,280 = 316,800 feet per hour. Since there are 3,600 seconds in an hour (60 minutes × 60 seconds), the speed is 316,800 feet ÷ 3,600 seconds = 88 feet per second. In 10 seconds, the car will travel 88 feet/second × 10 seconds = 880 feet.