1
35×79???
3681
2765
2665
3581
2
880000: 800?
1100
1000
100
111
211
3
1539-798?
549
741
449
4
27744+18997=
56741
46741
48792
42741
39741
5
Raiz quadrada de 289?
17
16
18
15
14
6
12 elevado a 2 ?
144
24
244
344
544