Question

Calvulati, dupa modelul prezentat:
Dau coroana!​

Answer 1

Răspuns:

a)35×99=35×(100-1)=35×100-35×1=3.500-35=3.456

b)27×101=27×(102-1)=27×102-27×1=2.754-27=2.727

c)15×102=15×(103-1)=15×103-15×1=1.545-15=1.530

d)31×98=31×(99-1)=31×99-31×1=3.069-31=3.038

e)4×999=4×(1.000-1)=4×1.000-4×1=4.000-4=3.996

f)5×1.004=5×(1.005-1)=5×1.005-5×1=5.025-5=5.020

Explicație pas cu pas:

,,,,,,~Succes!☆