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What else can I help you with?
Why can quantities with different units never be added or subtracted bwhy can quantities with different units never be added or subtracted but can be multiplied or diviut can be multiplied or divided?
Only like terms can be added or subtracted. 10m and 1s cannot be added; but divided, 10 m/s becomes a velocity.
Must quantities have different units before they can be added or subtracted?
no
Why can quantities with different units never be added or subtracted but can be multiplied or divided?
Because thats how y convert
What is 1.2 subtracted by 200 ml?
-198.8
What are prefixes and base units?
Prefixes are symbols that are added before a unit to denote a multiple or fraction of that unit, such as kilo for a thousand or milli for a thousandth. Base units are fundamental units of measurement that are used as a reference for other units in a particular system, such as the meter for length or the kilogram for mass in the metric system.
Explain why fractions need a common denominator to be added or subtracted?
The reason why is that a fraction is a different numbering system than whole numbers. The "whole number" system is based on units of 100. But a fraction is only a part of a whole number, so in order to add or subtract you must make both fractions the same type of unit just like whole numbers. You cannot add 1/6 and 2/24 unless you have the same units...which in this case is 24. So, multiplying the six by 4 will give you 4/24, and now you can add the numerators together because they are in the same "family".
What is the part of a fraction that tells how many units the fraction contains?
It is the denominator
What happens to the size of the fractional units when you rename the fraction?
Nothing happens to the fraction.
A fraction in which the numerator and denominator represent the same amount but are in different units?
What is a fraction in which the numerator and denominator represent the same amount but are in different units?
What is the fraction 256 if two inches is added on?
It is not possible to answer the question because there is no information about the units used for the integer value: 256. It should be obvious to anybody that the fraction for 256 millimetres + 2 inches will be quite different to 256 cm + 2 inches.
What is a fraction that compares two quantities measured in different units?
A rate is a fraction that compares two quantities measured in different units. If the denominator of the fraction is 1 unit, the rate is called a unit rate.
What fraction is 4 lbs?
The fraction is4/(the weight of the whole thing, in pounds) . The fraction is a naked number, without units.
