Question

Efetue as multiplicações pelo Algoritmo usual:
a) 3,5 x 6
b) 8 x R$ 12,50
c) 12 x 9,3
d) 15 x R$ 125,30

Answer 1

3,5 x 6= 21 => 3,5+3,5+3,5+3,5+3,5+3,5=21
8 x 12,50= 100=> 12,50+12,50+12,50+12,50+12,50+12,50+12,50+12,50=100
12 x 9,3= 111,6 => 9,3+9,3+9,3+9,3+9,3+9,3+9,3+9,3+9,3+9,3+9,3+9,3=111,6
15 x 125,30 = 1879,5 => 125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30+125,30=1879,5