Adding and Subtracting Fraction with Unlike Denominators

What is an equivalent fraction?

• A fraction that represents the same value as another fraction, even though the numerator and denominator are different.

• A fraction that is always greater than one.

• A fraction that has the same numerator and denominator.

• A fraction that cannot be simplified.

What is @@\frac{3}{4} - \frac{2}{10}@@?

• @@\frac{11}{20}@@

• @@\frac{7}{20}@@

• @@\frac{1}{2}@@

• @@\frac{3}{5}@@

• Find the least common denominator (LCD) of 4 and 10, which is 20.

• Add the numerators directly.

• Convert both fractions to decimals.

• Multiply the denominators together.

How do you subtract fractions with unlike denominators?

• Find a common denominator, convert each fraction to an equivalent fraction with that denominator, and then subtract the numerators.

• Simply subtract the numerators and denominators directly.

• Multiply the denominators and then subtract the numerators.

• Add the fractions first and then subtract the result from the whole.

What is the least common denominator (LCD)?

• The largest multiple that two or more denominators share.

• The smallest multiple that two or more denominators share.

• The sum of two denominators.

• The difference between two denominators.

What is the importance of finding a common denominator?

• It allows you to accurately add or subtract fractions by ensuring that the fractions are expressed in terms of the same whole.

• It simplifies fractions to their lowest terms.

• It helps in converting fractions to decimals easily.

• It allows for the multiplication of fractions without changing their values.

What is a fraction?

• A fraction is a whole number.

• A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

• A fraction is a type of decimal number.

• A fraction is a mathematical operation involving addition.

What happens if you try to add @@\frac{1}{2}@@ and @@\frac{1}{3}@@ without a common denominator?

• You will get the correct answer because the fractions are compatible.

• You will get an incorrect answer because the fractions represent different parts of different wholes.

• You will get a result that is the average of the two fractions.

• You will be able to add them directly without any issues.

Can you add fractions with unlike denominators directly?

• Yes, you can add them directly without any changes.

• No, you cannot add fractions with unlike denominators directly. You must first find a common denominator.

• You can add them directly if they are both improper fractions.

• You can add them directly if you convert them to decimals.