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When you are subtracting fractions and you need to borrow from the numerator do you add the whole number to the numerator?
Yeah banana
When do you need to find the least common multiple for two or more numbers?
When you are adding or subtracting unlike fractions.
When subtracting or adding numbers in scientific notation why do the exponents need to be the same?
This is effectively the same as lining up the decimal points when adding or subtracting ordinary decimal fractions.
What is the difference between subtracting with regrouping in whole numbers and subraction with regrouping in fractions?
We look at the signs of numbers when we need to combine them. We subtract only if numbers have different signs, otherwise we add them. So that, if we have in an expression several positive and negative numbers, we prefer to group numbers with the same sign and add them in order to subtract just once. While with fractions we like to group fractions with the same denominator first, and after that we can combine all fractions by finding their LCD.
What is the LCM of one half?
You need at least two numbers to find an LCM. And they need to be whole numbers, not fractions.
How is subtracting fractions like adding fractions?
You need a common denominator for both.
Do you need a common denominator when subtracting fractions?
yes you should use a common denominator when subtracting with fractions, it makes it much easier.
When subtracting fractions do you need common denominaters?
Yes
Do you need a common denominator in subtracting fractions?
Yes.
Why do you not need fractions?
You don't need fractions if you are only ever dealing with whole numbers, or complete items. Fractions are needed to show parts of the whole - half a bar of chocolate, a slice taken from an apple pie, and so on.
When would you need to know what LCM is?
When you are adding or subtracting fractions.
Why would you need to use LCM?
When you are adding or subtracting fractions.
