like denominators
13/30 + 9/30 +26/30
48/30
3/4 +1/4 +2/4
6/4
1/2 + 4/13
21/26
3/11 +1/7
32/77
The penguin nursery is open two times a day: 2/ 3 hour at noon and 5/ 12 hour in the afternoon. How much time is the penguin nursery open every day?
39/36
15/19 + 9/19 + 18/19
42/19
15/16 + 9/16 +12/16
36/16
2/3 +1/5
13/15
6/13 + 3/7
81/91
In the school stadium, 1/ 5 of the students were basketball players, 2/ 15 the students were soccer players, and the rest of the students watched the games. How many students watched the games?
25/75
12/24 +21/24 +9/24
42/24
18/20 +13/20 + 19/20
50/20
1/2 +1/10
12/20
3/19 +1/2
25/38
Oliver took 7/10 hours to travel from his house to his office. After 8 hours of work, he travelled 3/4 hours from his office to his house. How long altogether did Oliver travel on that day?
58/40
122/200 + 78/200 + 69/200
259/200
93/110 +64/110 + 590/110
747/110
2/5 + 2/19
48/95
5/7 +1/14
75/91
The capacity of the two milk pitchers on the counter is 9/ 10 liter each. One pitcher has 3/ 8 of a liter of milk in it and the other pitcher has 5/ 12 of a liter milk in it. How much milk is there altogether?
76/96
384/3800 + 642/3800 + 563/3800 + 827/3800
2418/3800
480/2500 + 487/2500 + 398/2500 + 400/2500
1765/ 2500
1/5 +4/13
33/65
5/16 + 2/5
57/80
Oliver gave an urgent task to his 2 assistants, Olivia, and Lucy. Olivia finished the task in 5/ 6 hours. Lucy finished the same work in 6 /5 hours. Who worked longer? How many hours longer? (subtract)
Lucy worked longer. 11/30