Question

Urgente!!!!!

1) Calcule mentalmente.

O item a vou resolver assim: 7×60-7×1.

a) 7×59
b) 5×78
c) 8×99
d) 4×19
e) 12×29
f) 3×198

Me ajudem!!! Pfvr!!!

Answer 1

a)R=413
b)r=390
c)r=792
d)r=76
e)r=348
f)r=594