2750-750
2000
56 X 1000
56000
450 / 10
45
1/2 x 2/3
1/3 = 2/6
8.75 + 0.25
9
23 x 1000
23000
600 / 30
20
1/2 - 1/8
3/8 = 6/16
La mitad de 4.6
2.3
234 X 1000
234 000
1500 / 50
30
1 / 7 + 1 /4
11 /28