Explicație pas cu pas:
450x210=
45x10x21x10=
45x21x10x10=
945x100=94 500
820x600=
82x10x6x100=
82x6x10x100=
492x1000=492 000
180x310=
18x10x31x10=
18x31x10x10=
558x100=55 800
600x900=
60x10x9x100=
60x9x10x100=
540x1000=540 000
Răspuns:
450 × 210 =
45 × 10 × 21 × 10 =
45 × 21 × 10 × 10 =
945 × 100 = 94 500
820 × 600 =
82 × 10 × 6 × 100 =
82 × 6 × 10 × 100 =
492 × 1000 = 492 000
180 × 310 =
18 × 10 × 31 × 10 =
18 × 31 × 10 × 10 =
558 × 100 = 55 800
600 × 900 =
60 × 10 × 9 × 100 =
60 × 9 × 10 × 100 =
540 × 1000 = 540 000
==pav38==
