1. You will need paper and pencil today!!
You CANNOT use a calculator!!!

2. Before: August 8, 2017 Find the LCM of the following numbers.
3, 4, and 12
6 and 8
12 and 5
The least common denominator (LCD) is the least common multiple of the denominators.

3. During: Adding and Subtracting Fractions
Learning Target:
I can add and subtract fractions with unlike denominators
AND explain how to perform this operation.

4. The Pacific Ocean covers of Earth’s surface. The Atlantic 1 3 __
The Pacific Ocean covers of Earth’s surface. The Atlantic
Ocean covers of Earth’s surface. To find the fraction of
Earth’s surface that is covered by both oceans, you can add
and , which are unlike fractions. 1 5 __ 1 3 __ 1 5 __

5. To add or subtract unlike fractions, first rewrite them as equivalent fractions with a common denominator.
Remember!
Fractions that represent the same value are equivalent.
EXAMPLE: Write the equivalent fractions for 2/5 and 7/12 using the LCM (60) as the denominator.

6. “I DO” Cooking Application
Mark made a pizza with pepperoni covering of the
pizza and onions covering another What fraction of
the pizza is covered by pepperoni and onions? 1 4 __ 1 3 __

7. “WE DO” Garden Application
For a class gardening project, 1/4 of Mrs. Stafford's students planted marigolds and 1/8 planted tulips. What fraction of the class planted either marigolds or tulips?

8. “YOU DO” Application
Donald drank 1/6 of a cup of orange juice in the morning and 1/2 of a cup in the afternoon. How much orange juice did Donald drink in all?
Seth is learning to drive, so this weekend he practiced driving 2/3 of a mile with his mother and another 1/6 of a mile with his father. How far did Seth drive in all?

9. “I DO” Sandcastle Application
At the beach, Keith and his sister both built sandcastles and then measured their heights. Keith's sandcastle was 3/5 of a foot tall and his sister's was 1/10 of a foot tall. How much taller was Keith's sandcastle than his sister's?

10. “WE DO” Drawing Application
Jenny drew a white line that was 1/2 of an inch long. Then she drew a red line that was 1/6 of an inch long. How much longer was the white line than the red line?

11. “YOU DO” Application
Yoshi and Noah own neighboring cornfields. Yoshi harvested 7/10 of an acre of corn on Monday and Noah harvested 1/5 of an acre. How many more acres did Yoshi harvest than Noah?
Professor Doyle weighed two pieces of metal for an experiment. The piece of iron weighed 7/10 of a pound and the piece of aluminum weighed 1/2 of a pound. How much more did the piece of iron weigh than the piece of aluminum?

12. Practice Problems Complete the worksheet