0
the are, unfortunately, unavoidable. any system of measurement will come short in measuring actual reality.
if you need to weigh your gasoline for a molotov coctail and you can only measure gallons (and not fractions thereof) you would not know how much fuel you were using. you would see only an unknown portion of a gallon without actuall knowing, numerically, how much was in it.
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
When do you cross multiply in dividing fractions?
To divide fractions, turn the second one over - that is, swap its numerator and denominator - and multiply. Nothing else is necessary. You cross multiply when you have a proportion, that is when you have two ratios that are equal.
What are like and unlike fractions?
Like fractions are the fractions which have the same denominator and unlike fractions are the fractions which do not have the same denominator.
How do you solve all fractions problems?
You basically have to learn separately how to do different things with fractions, including finding a common denominator; converting fractions to a different denominator; simplifying fractions; adding and subtracting fractions; multiplying fractions; dividing fractions.
Fractions can be added and subtracted only if they're fractions?
We can only add or subtract fractions if they have the same denominators
Define equivalent fractions?
Equivalent fractions are fractions that have the same value as another fraction.
Before adding or subtracting two fractions they are converted into like fractions Explain with examples why this is necessary?
Before adding or subtracting two fractions they are converted into like fractions. Explain with examples why this is necessary.
Is it necessary to cross multiply when multiplying fractions?
No.
When adding or subtracting two fractions what is a necessary requirement?
A common denominator.
What you do when you multiplying fractions it is often necessary to the result to lowest terms?
reduce
Is it always necessary to find the LCD to compare the sizes of fractions explain?
Yes
What are the rules of the dissimilar fractions?
I assume you mean, with different denominators. If you want to add the fractions, subtract them, or compare them (determine which one is greater), you have to convert them to similar fractions (fractions with the same denominator) first. Converting to similar fractions is not necessary, and usually doesn't even help, if you want to multiply or divide fractions.
What fractions of the houses of congress is necessary to approve a proposed amendment?
More than half.
What fractions of the house of Congress is necessary to approve a proposed amendments?
More than half.
Do you need to find the LCD in multipliying?
When multiplying fractions, it is not necessary to find the LCD first.
Why is it necessary to convert two fractions into like fractions before adding and subtracting them?
Because think of like fractions as the same things.. you can subtract halves from halves for example, but what does it mean to take away a half from a third?By converting them into like fractions, we can add or subtract them easily.
How fractions started?
Fractions start with pie. People discovered that if you have one pie, and you have more than one person who wishes to eat pie, it becomes necessary to divide the pie into fractions. Four people can each have a quarter of a pie, for example.
Why do you need to know how to subtract fractions?
It is necessary so that people that adore horses can survive during the winter.
