A fraction represents a part of a whole. It consists of a numerator (top number) and a denominator (bottom number). For example, in the fraction $$\frac{3}{4}$$ , 3 is the numerator and 4 is the denominator.

How do you simplify a fraction?

To simplify a fraction, divide the numerator and the denominator by their greatest common divisor (GCD). For example, $$\frac{8}{12} = \frac{8 \text{ ÷ } 4}{12 \text{ ÷ } 4} = \frac{2}{3}$$ .

What is a reciprocal?

A reciprocal of a number is 1 divided by that number. For example, the reciprocal of $$\frac{3}{4}$$ is $$\frac{4}{3}$$ .

How do you add fractions with different denominators?

To add fractions with different denominators, find a common denominator, convert the fractions, and then add the numerators. For example, to add $$\frac{1}{3} + \frac{1}{4}$$ , the common denominator is 12: $$\frac{4}{12} + \frac{3}{12} = \frac{7}{12}$$ .

What is the formula for finding the area of a rectangle?

The area of a rectangle is found by multiplying its length by its width. For example, if a rectangle has a length of 5 feet and a width of 3 feet, its area is $$5 \times 3 = 15 \text{ square feet}$$ .

How do you convert a fraction to a decimal?

To convert a fraction to a decimal, divide the numerator by the denominator. For example, $$\frac{1}{4} = 1 \text{ ÷ } 4 = 0.25$$ .

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

A proper fraction has a numerator that is less than the denominator (e.g., $$\frac{2}{3}$$ ), while an improper fraction has a numerator that is greater than or equal to the denominator (e.g., $$\frac{5}{4}$$ ).

How do you find the total number of pieces when cutting a length of string?

To find the total number of pieces, divide the total length by the length of each piece. For example, if Damian has a 3-foot string and cuts it into pieces that are $$\frac{1}{4}$$ foot long, he cuts $$3 \text{ ÷ } \frac{1}{4} = 3 \times 4 = 12$$ pieces.

Illustrative Math Unit 3AB Flashcards

Student preview

14 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is a fraction?

Back

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

2.

FLASHCARD QUESTION

Front

How do you convert a mixed number to an improper fraction?

Back

Tags

CCSS.3.NF.A.3C

3.

FLASHCARD QUESTION

Front

What does it mean to divide by a fraction?

Back

4.

FLASHCARD QUESTION

Front

What is the formula for multiplying fractions?

Back

Tags

CCSS.5.NF.B.6

5.

FLASHCARD QUESTION

Front

How do you find the total when multiplying a fraction by a whole number?

Back

Tags

CCSS.4.NF.B.4B

CCSS.4.NF.B.4C

6.

FLASHCARD QUESTION

Front

What is the relationship between division and multiplication of fractions?

Back

Tags

CCSS.6.NS.A.1

7.

FLASHCARD QUESTION

Front

What is an improper fraction?

Back

Tags

CCSS.3.NF.A.3C

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