Question

Ex 5 dau Coronita si SPER CA AVETI TOATE DETALIILE

Answer 1

a) 35*99=35*(100-1)=35*100-35*1=3500-35=3465

b)27*101=27*(102-1)=27*102-27*1=2754-27=2727

c)15*102=15*(103-1)=15*103-15*1=1545-15=1530

d)31*98=31*(99-1)=31*99-31*1=3069-31=3038

e)4*999=4*(1000-1)=4*1000-4*1=4000-1=3999

f)5*1004=5*(1005-1)=5*1005-5*1=5025-5=5020

sper ca tiam fost de ajutor