Adding and subtracting fractions with like denominators

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (part) and 'b' is the denominator (whole).

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What does it mean to have like denominators in fractions?

Back

Like denominators mean that the fractions have the same bottom number (denominator), which makes it easier to add or subtract them.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you add fractions with like denominators?

Back

To add fractions with like denominators, keep the denominator the same and add the numerators. For example, 2/5 + 1/5 = (2+1)/5 = 3/5.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you subtract fractions with like denominators?

Back

To subtract fractions with like denominators, keep the denominator the same and subtract the numerators. For example, 5/8 - 2/8 = (5-2)/8 = 3/8.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the lowest terms of a fraction?

Back

Lowest terms of a fraction mean that the numerator and denominator have no common factors other than 1. For example, 4/8 can be simplified to 1/2.

Front

What is the sum of 2/8 + 4/8?

Back

The sum is 6/8.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the difference of 9/10 - 3/10?

Back

The difference is 6/10 or 3/5 in lowest terms.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

If you have 36 slices of pizza and eat 30, what fraction is left?

Back

6 slices are left, which is 6/36 or 1/6.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

What is the sum of 2/12 + 3/12?

Back

The sum is 5/12.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you simplify the fraction 6/12?

Back

You can simplify 6/12 to 1/2 by dividing both the numerator and denominator by 6.