1. Tyler juggled for 1 hr during the school week. He
Adding Mixed Numbers
LESSON 5-4
Additional Examples
Tyler juggled for 1 hr during the school week. He
juggled for 2 hr over the weekend. How many hours did he
juggle in all that week? 1 3 1 4
Find 1 3 4
Estimate = 3 1 3 4 1 4 +
The LCD is 12. Write the fractions
with the same denominator. 2 3 12
Add the whole numbers.
Then add the fractions. 3 7 12
Tyler juggled for a total of hr. 7 12
Check for Reasonableness The answer is close to the estimate of 3. 7 12

2. Find 5 + 3 . + The LCD is 10. Write as . 5 3 8 Add the whole numbers.
Adding Mixed Numbers
LESSON 5-4
Additional Examples
Find 4 5 9 10 +
The LCD is 10. Write as . 5 3 4 9 10 8 17 10 8
Add the whole numbers.
Then add the fractions.
= 8 + 1 7 10
Rename as 17
= 9 7 10
Add the whole numbers.

3. A mother cat weighs 14 lb. Her kitten weighs 1 lb.
Adding Mixed Numbers
LESSON 5-4
Additional Examples
A mother cat weighs lb. Her kitten weighs 1 lb.
How much do they weigh together? 5 8 1 2
Find 5 8 1 2
Total
14 1
mother kitten 1 +
The LCD is 8. Write as . 14 5 8 2 4
Add the whole numbers.
Then add the fractions. 15 9 8 =
Rename as 1 . 9 8 1
= 16
Add the whole numbers. 1 8
The mother cat and kitten weigh lb. 1 8