12.3 Modeling Subtraction of Fractions

Front

What is the process for subtracting fractions with different denominators?

Back

To subtract fractions with different denominators, first find a common denominator, convert each fraction to an equivalent fraction with that denominator, then subtract the numerators and simplify if possible.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you simplify a fraction?

Back

To simplify a fraction, divide both the numerator and the denominator by their greatest common divisor (GCD).

Front

What is the greatest common divisor (GCD)?

Back

The greatest common divisor (GCD) is the largest positive integer that divides each of the integers without leaving a remainder.

Front

What is the result of subtracting 1/2 from 3/4?

Back

1/4. (3/4 - 1/2 = 3/4 - 2/4 = 1/4)

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

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

Back

To convert an improper fraction to a mixed number, divide the numerator by the denominator. The quotient is the whole number, and the remainder over the original denominator is the fractional part.

Front

What is the result of subtracting 2/3 from 5/6?

Back

1/6. (5/6 - 2/3 = 5/6 - 4/6 = 1/6)

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What does it mean to simplify a fraction?

Back

Simplifying a fraction means reducing it to its lowest terms, where the numerator and denominator have no common factors other than 1.

Front

What is the first step in subtracting fractions?

Back

The first step in subtracting fractions is to ensure that the fractions have a common denominator.

Tags

CCSS.7.NS.A.1C

Front

What is the result of subtracting 1/4 from 1/2?

Back

1/4. (1/2 - 1/4 = 2/4 - 1/4 = 1/4)

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you find a common denominator for two fractions?

Back

To find a common denominator, determine the least common multiple (LCM) of the denominators.