Adding and Subtracting Fractions

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Questions and Answers

What will be the result of the operation $3/8 + 1/8$?

$1/8$
$5/8$ (correct)
$4/8$
$2/8$

If you subtract $5/9 - 2/9$, what is the correct answer?

$2/9$
$7/9$
$1/9$
$3/9$ (correct)

When subtracting $3/5 - 1/2$, what is the first step required?

Add the fractions first.
Subtract the numerators directly.
Find a common denominator. (correct)
Change the fractions into whole numbers.

Which of the following statements about adding fractions with equal denominators is true?

<p>The denominators remain the same. (D)</p> Signup and view all the answers

If the fractions $5/6 + 1/6$ are calculated, what is the sum?

<p>$7/6$ (B)</p> Signup and view all the answers

Flashcards

Adding fractions with the same denominator

To add fractions with the same denominator, simply add the numerators and keep the denominator the same.

Subtracting fractions with the same denominator

To subtract fractions with the same denominator, subtract the numerators and keep the denominator the same.

Subtracting fractions with different denominators

Before subtracting fractions with different denominators, find a common denominator by finding the least common multiple (LCM). Then, subtract the numerators and keep the common denominator.

Least Common Multiple (LCM)

The least common multiple (LCM) is the smallest common multiple of two or more numbers.

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What does the denominator represent?

The denominator represents the total number of equal parts into which something is divided. It's like the size of the slices in a pie.

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Study Notes

Adding Fractions

If denominators are the same, add the numerators and keep the denominator the same
Example: 3/7 + 2/7 = 5/7

Adding Fractions with Different Denominators

If denominators are different, first make them the same
Then, add the numerators and keep the denominator the same

Subtracting Fractions

If denominators are the same, subtract the numerators and keep the denominator the same
Example: if the problem is 3/7 - 2/7 , you subtract the numerators (3-2), then put that number over the denominator (7), which equals 1/7

Subtracting Fractions with Different Denominators

If denominators are different, first make them the same
Then, subtract the numerators and keep the denominator the same

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Description

This quiz covers the fundamental concepts of adding and subtracting fractions, including both like and unlike denominators. Practice with examples to solidify your understanding of these key operations in arithmetic. Perfect for students seeking to improve their fraction skills!