Measurement Operations

Questions and Answers

You cannot multiply or divide measurement units that are completely different.

You need to have the same measurement units.

You can multiply or divide measurement units that are completely different. (correct)

You can multiply or divide measurement units in the same way you add and subtract them.

They are converted to a different unit.

They cancel out.

They are converted to the same unit.

They stay the same. (correct)

Cancel out one unit.

Change one unit to the other.

Leave the measurement as it is.

Convert it into a decimal. (correct)

2 inches Signup and view all the answers

Miles per hour Signup and view all the answers

Because it makes more sense in terms of algebra. Signup and view all the answers

They are converted to the same unit. Signup and view all the answers

Multiplying 1 meter by 1 pound. Signup and view all the answers

Because it allows you to perform the operation correctly. Signup and view all the answers

They stay the same. Signup and view all the answers

Study Notes

Measurements can be treated as variables when performing operations such as adding, subtracting, multiplying, and dividing.
This is important in real-life problems that involve measurements, such as in restaurant management.

To add measurements, ensure that the measurement units are the same.
If the units are the same, add the numbers together, e.g., 3 feet + 4 feet = 7 feet.
If the units are different, convert one unit to match the other before adding, e.g., 3 feet + 36 inches = 3 feet + 3 feet = 6 feet.

To subtract measurements, ensure that the measurement units are the same.
If the units are the same, subtract the numbers together, e.g., 10 feet - 7 feet = 3 feet.
If the units are different, convert one unit to match the other before subtracting, e.g., 10 feet - 120 inches = 10 feet - 10 feet = 0 feet.

To multiply measurements, ensure that the measurement units are in the same unit or can be converted to the same unit.
Multiply the numbers together, e.g., 7.5 feet * 10 feet = 75 square feet.
The resulting unit will be the product of the original units, e.g., feet * feet = square feet.
Unlike addition and subtraction, different measurement units can be multiplied together.

To divide measurements, ensure that the measurement units are in the same unit or can be converted to the same unit.
Divide the numbers together, e.g., 6 inches ÷ 3 = 2 inches.
The resulting unit will stay the same if dividing by a number, but may change if dividing by a different unit, e.g., 70 miles ÷ 2 hours = 35 miles per hour.
Unlike addition and subtraction, different measurement units can be divided together.