Homework 2A
The two forms of 1 that are equivalent to the conversion 1 lb = 16 oz are
16 oz/1 lb or 1 lb/16 oz
There are 1760 yards in a mile. Therefore, what does 1 cubic mile represent?
1760(cubed 3) yards(cubed 3)
Describe how units can help to check the answers and solve problems.
Consider a box with the side lengths in inches. The volume of the box would be calculated in cubic inches. The key word "cube or cubic" in this context means that the unit inches is raised to the third power. The mathematical symbol to represent the unit of the volume of the box is "in cubed(3)."
How is it possible to end up with units of speed?
Divide a distance by a time
Multiply by the numbers in the column "Dollars per Foreign" to convert from _______ to U.S dollars.
Foreign currency
What does the word "of" mean?
Multiply by
Decide whether the following statement makes sense I drove at a speed of 35 miles for the entire trip.
The statement does not make sense because miles is not a unit of speed.
Decide whether the following statement makes sense I have a box with a volume of 2 square feet.
The statement does not make sense because square feet is not a unit of volume.
What does the word "per" mean?
The word "per" means divided by because it implies division.
Multiply by the numbers in the column "Foreign per Dollar" to convert from ________ to foreign currency.
U.S dollars
Explain why a unit conversion involves just multiplying by 1.
Unit conversion always involves multiplying by the appropriate form of 1 so that the meaning of the original expression does not change.
What are units?
Units are words that describe what is being measured or counted.
Which of the following would not be a component the Runnells may have utilized in their letters and phone calls made for problem solving?
Work the problem backwards.
Your average speed on a long walk, found by dividing distance traveled in miles by time elapsed in seconds. What are the units mathematically? in words?
mi/s miles per second
