50 - 2 = 48 8 x 10 = 80 25 x 48 = 1200 80 + 1200 = 1280 7 x 1280 = 8960
7 x 8 = 56 56 + 25 = 81 2 x 10 = 20 81 - 50 = 31 20 + 31 = 51
8 + 7 = 15 15 - 2 = 13 50 - 13 = 37 37 + 10 = 47 47 x 25 = 1175
8 x 25 = 200 7 x 50 = 350 200 + 350 = 550 550 + 2 = 552 552 - 10 = 542
Nombre à obtenir :
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