Adding and Subtracting Mixed Numbers

2 7/10 + 3 1/5

• 9 8/15

• 5 9/10

• 1 9/10

• 1 6/15

6 2/4 - 2 2/5

• 2/20

• 8 2/20

• 4 2/20

• 8 4/9

6 1/2 - 3 2/3

**REGROUP**

• 2 5/6

• 3 5/6

• 9 3/5

• 9 5/6

21 7/12 - 10 5/6

**REGROUP**

• 1 9/12

• 5 9/12

• 6 9/12

• 10 9/12

3 3/8 + 4 1/2

• 7 4/10

• 7 2/6

• 7 5/8

• 7 7/8

12 1/4 - 8 2/3

**REGROUP**

• 3 7/12

• 2 12/7

• 7/12

• 4 7/12

Why do we need to find an LCD before we add or subtract fractions?

• We don't

• Fractions don't make sense.

• We never ever ever ever add denominators

• Fake News.

1 1/3 + 1 1/4

• 2 2/7

• 2 1/7

• 2 7/12

• 2 1/12

8 5/6 - 2 2/3

• 6 3/3

• 5 5/6

• 6 1/6

• 10 9/6

8 4/5 1 1/10

• 9 9/10

• 10 9/10

• 7 3/10

• 5 9/10