👤

Grupați termenii in mod convenabil,pentru a calcula rapid.

Grupați Termenii In Mod Convenabilpentru A Calcula Rapid class=

Răspuns :

a) (32+18) +(15+35) = 50+50=100
a)
15+35+32+18=50+50=100
44+56+27+73=100+100=200
33+67+89+11=100+100
25+75+35+65=100+100
b)
232+168+175+225=400+400=800
771+229+796+104=1000+900=1900
211+389+167+133=600+300=900
999+101+664+436=1100+1100=2200