Operations of Fractions

How do you divide fractions?

• Multiplique pelo recíproco da segunda fração, por exemplo, @@\frac{1}{2} \div \frac{3}{4} = \frac{1}{2} \cdot \frac{4}{3} = \frac{4}{6} = \frac{2}{3}@@.

• Somehow subtract the numerators and denominators.

• Add the fractions together before dividing.

• Multiply the denominators and then divide the numerators.

Tags

CCSS.6.NS.A.1

How do you add fractions with the same denominator?

• Some the numerators and keep the denominators the same.

• Multiply the numerators and denominators.

• Add the denominators and keep the numerators the same.

• Subtract the numerators and keep the denominators the same.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the difference between a proper fraction and an improper fraction?

• A proper fraction has a numerator greater than or equal to the denominator (e.g., @@\frac{5}{4}@@).

• A proper fraction has a numerator smaller than the denominator (e.g., @@\frac{2}{3}@@), while an improper fraction has a numerator greater than the denominator.

• A proper fraction has a numerator equal to the denominator (e.g., @@\frac{1}{1}@@), while an improper fraction has a numerator smaller than the denominator.

• A proper fraction has a numerator smaller than the denominator (e.g., @@\frac{1}{2}@@), while an improper fraction has a numerator greater than or equal to the denominator (e.g., @@\frac{3}{3}@@).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is a mixed number?

• A whole number combined with a proper fraction, such as @@1 \frac{1}{2}@@.

• A number that is only a whole number without any fractions.

• A decimal number that represents a fraction.

• A number that is the sum of two whole numbers.

What is a common denominator?

• A number that is only divisible by itself and one.

• A shared multiple of the denominators of two or more fractions, used to add or subtract them.

• A fraction that has a numerator of one.

• The largest denominator among a set of fractions.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the process for subtracting fractions?

• If the fractions have the same denominator, subtract the numerators and keep the denominator.

• Always convert fractions to decimals before subtracting.

• Add the numerators and denominators together.

• Multiply the fractions before subtracting.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

What is the reciprocal of a fraction?

• The reciprocal of a fraction is obtained by adding the numerator and denominator.

• The reciprocal of a fraction is obtained by multiplying the numerator and denominator.

• The reciprocal of a fraction is obtained by inverting the numerator and denominator.

• The reciprocal of a fraction is obtained by squaring the numerator.

What is an improper fraction?

• A fraction where the numerator is less than the denominator, such as @@\frac{3}{4}@@.

• A fraction where the numerator is equal to the denominator, such as @@\frac{5}{5}@@.

• A fraction where the numerator is greater than or equal to the denominator, such as @@\frac{5}{4}@@.

• A fraction that cannot be simplified, such as @@\frac{6}{8}@@.

Tags

CCSS.3.NF.A.3C

How do you multiply fractions?

• Multiply the numerators and add the denominators.

• Multiply the numerators together and the denominators together, e.g., @@\frac{2}{3} \cdot \frac{3}{4} = \frac{6}{12} = \frac{1}{2}@@.

• Add the numerators and multiply the denominators.

• Multiply the denominators and subtract the numerators.

Tags

CCSS.5.NF.B.6

What is the significance of the denominator in a fraction?

• It indicates how many parts the whole is divided into.

• It represents the total number of parts in a fraction.

• It shows the value of the fraction in decimal form.

• It indicates the number of parts being considered.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B