1) Efectuează:
25×7×42×53×0×10 =
= 175×2226×0 =
= 389550 × 0 =
= 0
55×33×4×10×10 =
= 1815×40×10 =
= 72600×10 =
= 726000
1×9×99×999 =
= 9×98901 =
= 890109
300×30×2×50 =
= 9000×100 =
= 900000
2) Calculează:
14×8×7 = 112×7 = 784
6×39×4 = 234×4 = 936
18×6×9 = 108×9 = 972
8×47×2 = 376×2 = 752
5×24×8 = 120×8 = 960