Multiplicación
18x9
162
90/10
9
1,000-408
592
400+900
1300
800+500
1300
200x9
1800
200/10
20
200-38
162
200+400
600
40x12
480
300x100
30,000
30/6
5
48-36
12
200+900
1100
33/3
11
20x19
380
70/5
14
40-36
4
500+600
1,100
2,000-480
1520
500x50
25000
100/5
20
500-490
10
200+800
1000
78-19
59