Adding Fractions
Add:
1/2 + 1/3 =
5/6
5/6 - 1/4
7/12
2 + 1 1/5
3 1/5
2 - 1 3/8
5/8
the top and bottom numbers in a fraction are called the
Add:
3/4 + 1/5
19/20
2/3 - 1/7
11/21
5 2/5 + 2 1/3
7 11/15
4 - 2 2/7
1 5/7
Write 2 5/6 as an improper fraction
17/6
Jamal used 1/6 yard of ribbon to tie a package and 3/4 yard of ribbon to tie a bow. How many yards of ribbon did Jamal use?
1/6 + 3/4 = 11/12
He used 11/12 yards of ribbon
Sandra says that 4/7 - 1/3 = 3/4
Is she correct? Why or Why not?
*she subtracted the numerators and denominators across
*the denominators are not the same, she needs a common denominator and to adjust the fractions
2 1/4 + 1 1/5
3 9/20
Mrs. Fremont mixed up 12 3/5 gallons of chili for a party. If 7 3/4 gallons of chili was mild, and the rest was spicy, how much spicy chili did Mrs. Fremont make?
20 1/2 gallons
3 2/8
26/8
Penny used 2/5 lb of flour to bake a vanilla cake. She used another 3/4 lb of flour to bake a chocolate cake. How much flour did she use altogether?
2/5 + 3/4 = 23/20
1 3/20
Jing spent 1/3 of her money on a pack of pens, 1/2 of her money on a pack of markers and 1/8 of her money on a pack of pencils. What fraction of her money is left?
*you must draw a picture to support your answer
1/3 + 1/2 + 1/8 = 23/24
1 - 23/24- 1/24
*1 = 24/24 in this problem
Erin jogged 2 1/4 miles on Monday. Wednesday, she jogged 3 1/3 miles, and on Friday she jogged 2 2/3 miles. How far did Erin jog altogether?
8 1/4 miles
Lucy decided to spend 6 1/2 hours studying over the weekend. She spent 1 1/4 hours studying on Friday and 2 2/3 hours on Saturday. How much longer does she need to spend studying on Sunday in order to reach her goal?
*Draw a tape diagram to solve
1 1/4 + 2 2/3 = 3 11/12
6 1/2 - 3 11/12 = 2 7/12 hours
Write the improper fraction as a mixed number:
32/5
6 2/5
Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.
1. How many hours has Carlos practices piano?
2. How much longer does he need to practice before going to bed in order to meet his goal?
1. 3/4 + 7/10 = 1 9/20
2. 2 - 1 9/20 = 11/20
Mason weeded 1/5 of the garden and Ari weeded some, too. When they were finished, 2/3 of the garden still needed to be weeded. What fraction of the garden did Ari weed?
*you MUST have a picture to prove your answer
2/3 + 1/5 = 13/15
1 - 13/15 = 2/15
*in this problem 1 = 15/15
Mia bought some paint. She used 2 1/4 gallons painting her bedroom. After that, she had 3 5/6 gallons left. How much paint did she buy?
6 1/12 gallons
A baker needs 5 lb of butter for a recipe. She found 2 portions that each weigh 1 1/6 lb and a portion that weighs 2 2/7 lb. Does she have enough butter for your recipe?
1 1/6 + 1 1/6 = 2 1/3
2 1/3 + 2 2/7 = 4 13/21
She does NOT have enough butter.
Write the improper fraction as a mixed number:
49/6
8 1/6