👤

Sagot :

a)32x101
=32x100+32x1
=3200+32
=3232
b)32x99
=32x100-32x1
=3200-32
=3168
c)13x102
=13x100+13x2
=1300+26
=1326
d)28x999
=28x1000-28x1
=28000-28
=27972

Voilaa ;)

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