Consider the following expression..
3/4 + 1/5 =
3/4 x 5 = 15/20
1/5 x 4 = 4/20
15/20 + 4/20 = 19/20
2/3 + 1/6 =
Less than 1?
Between 1 and 2?
Greater than 2?
2/3 + 1/6 = Less than 1
Leslie made 3/6 of a ham sandwich. Her dog, Luna, decided to taste test 1/3 of the sandwich that she made. What fraction of the sandwich is left after Luna’s taste test?
A. 1/6
B. 2/3
C. 2/6
D. 1/2
3/6 - 1/3 (2) =
3/6 - 2/6 = 1/6
A. 1/6
3 3/4 + 2 1/5 =
3 3/4 (5) + 2 1/5 (4) =
3 15/20 + 2 4/20 =
5 19/20
2 3/4 + 1 1/5 =
Less than 3?
Between 3 and 4?
Greater than 4?
2 3/4 + 1 1/5 = Between 3 and 4
Marty has been growing carrots in his garden this summer. On Monday he picked 1/5 gallon of carrots. On Tuesday he picked another 2/3 gallon of carrots.
ESTIMATE and then SOLVE.
ESTIMATE: Marty picked between 1/2 and 1 gallon of carrots.
SOLVE: 1/5 (3) + 2/3 (5) = 3/15 + 10/15 = 13/15
Marty picked 13/15 gallons of carrots.
5/6 - 3/8 =
5/6 (8) - 3/8 (6) =
40/48 - 18/48 =
22/48
or divide by 2 to simplify to 11/24
5/6 - 2/8 =
Less than 1?
Between 1 and 2?
Greater than 2?
5/6 - 2/8 = Less than 1
Jamie is making a candy salad for her friends. She starts by adding 3/4 pound of starbursts, 2/3 pound of skittles and 5/12 pound of jolly ranchers. How many pounds of candy does she have for her friends? Justify your solution with numbers or words.
3/4 + 2/3 + 5/12 =
3/4 (3) + 2/3 (4) + 5/12 =
9/12 + 8/12 + 5/12 =
22/12 = 1 10/12 OR 1 5/6
3 5/6 - 1 3/4 =
3 5/6 (4) - 1 3/4 (6) =
3 20/24 - 1 18/24 =
2 2/24 OR 2 1/12
2 5/6 - 1 3/4 =
Less than 1?
Between 1 and 2?
Greater than 2?
2 5/6 - 1 3/4 = Between 1 and 2
Jamie’s friend, Joe, accidentally spilled 6/10 of their 1 2/5 lbs of candy salad. How much candy salad do they have left? Is this amount more than a pound or less than a pound? Justify your solution with numbers or words.
1 2/5 (2) - 6/10 =
1 4/10 - 6/10 =
14/10 - 6/10 =
8/10 OR Simplified to 4/5
This is less than a pound.
4 3/5 - 2 1/3 =
4 3/5 (3) - 2 1/3 (5) =
4 9/15 - 2 5/15 =
2 4/15
4 1/4 - 1 1/2 =
Less than 2?
Between 2 and 3?
Greater than 3?
4 1/4 - 1 1/2 = Between 2 and 3
Mikey rides his bike 2 3/4 kilometers from his home to the store. He rides his bike 3 1/3 kilometers from the store to the park. If he meets his friend for pizza 7/12 kilometers away, what is the total distance he traveled?
2 3/4 (3) + 3 1/3 (4) + 7/12 =
2 9/12 + 3 4/12 + 7/12 =
5 20/12 = 6 8/12 OR 6 2/3
Mikey rode his bike 6 2/3 kilometers.