Add/Subtract Fractions
2/4 + 1/4=
3/4
1/2= __/6
3/6
1 1/2 + 1/2 =
2
Slide 1
1 2/4 + 1 2/4 + 1 2/4 =
3 6/4 = 4 2/4, or 4 1/2 cups
Draw an area model to show 5 x 1/4
Slide 6
1/8 + 4/8=
5/8
2/4 is equivalent to ___/12.
6/12
Jiro buys 4 7/8 pounds of potatoes and 2 3/8 pounds of onions. How many vegetables did he buy altogether?
4 7/8 + 2 3/8 =
4+2= 6 7/8 + 3/8= 10/8 or 1 2/8
= 7 2/8, or 7 1/4 pounds
Slide 2
1 + 1 1/4 + 1 1/4 + 1 1/4 + 1 2/4 + 1 2/4 + 1 2/4 + 1 3/4 + 1 3/4 + 2=
14 3/4 cups of sauce
What is 2 x 3/4?
6/4 or 1 1/2 (1 2/4)
Sammy has 4/5 of his art project left to paint. He paints 2/5 of the project. What fraction of the project is left to paint?
2/5
2/5 ___ 5/8
2/5 < 5/8
Ms. M ordered 16 quesadillas for the fiesta. There are 3 5/8 quesadillas left after the fiesta. How many quesadillas were eaten?
16 - 3 5/8=
15 8/8 - 3 5/8=
12 3/8
Slide 3
4 1/2 + 5= 9 1/2
What is the product of 5 x 3/8?
15/8 or 1 7/8
Find 5/6 - 3/6.
Use a number line or an area model to show your thinking.
2/6
Compare the following fractions:
7/8 ___ 4/5
7/8 > 4/5
Four friends share 3 orders of French fries.
Alex eats 5/8 of an order. Riley eats 7/8 of an order. Sam eats 6/8 of an order. How much of an order does the fourth friend eat?
3 orders= 24/8
5/8 + 7/8+ 6/8= 18/8
24/8-16/8= 6/8
Slide 4
7 + 6 3/4 + 6 1/4 + 6 1/4 =
7+6+6+6=25
3/4+1/4+1/4=5/4=
26 1/4 feet
How is 3 x 3/8 the same as 9 x 1/8?
Both equations have the same product of 9/8.
Find three ways to decompose the fraction 7/8.
4/8+3/8
2/8+2/8+3/8
2/8+5/8
1/8+6/8
1/8+1/8+1/8+1/8+1/8+1/8+1/8
Demi and Tyler are working on the same reading assignment. Demi reads 5/6 of the article in her homework and Tyler reads 2/3 of the article. Which student read more?
Demi read more than Tyler.
12 5/12 - 7 9/12
12-7= 5 - 1= 4
5/12-9/12= 1+5/12 - 9/12 =
17/12-9/12= 8/12
= 4 8/12, or 4 2/3
Slide 7