Adding/Subtracting fractions
Draw a model to show 3/7 + 2/7
5/7
Decompose 4/5 using unit fractions
1/5 + 1/5 + 1/5 + 1/5
3 3/4 - 1 2/4
2 1/4
2 1/4 + 2 2/4
4 3/4
Emily is cutting ribbon for an art project. One piece of ribbon measures 5/8 of a foot long. Another piece of ribbon measures 2/8 of a foot long. What is the total length of both pieces of ribbon?
7/8 feet
Draw a model to subtract the fractions 5/6 - 4/6 =
1/6
Decompose 5/6 any way you want
...
6 1/5 - 2 3/5
3 3/5
2 2/3 + 3 2/3
6 1/3
Joey is making pizzas for a party. He has 11/12 pounds of cheese. He uses 6/12 pounds of the cheese to make pizzas. How much cheese does Joey have left over?
5/12 pounds of cheese
4/8 + 2/8 =
3/4
Decompose the mixed number 2 3/5 in two different ways
...
4 2/8 - 1 6/8
2
4 7/8 + 3 5/8
8 1/2
Elliot is painting in art class. He needs 1 4/5 cups of red paint and 1 2/5 cups of green paint. How much total paint does Elliot need for art class?
3 1/5 cups of paint
8/12 - 4/12
1/3
2/5+2/5 =4/10
FALSE
5 2/10 - 2 8/10
2 2/5
4 8/12 + 2 8/12
7 1/3
Amanda had 8 1/6 pounds of soil for her vegetable garden. While planting her vegetables, she uses 5 5/6 pounds of soil. How many pounds of soil does Amanda have left over?
2 2/6 pounds of soil