Question

4 Grupează convenabil termenii pentru a
calcula rapid:
a) 64 300 + 7 743 + 137 257 + 35 700
b) 35 568 +9 999 + 1 001 + 164 432
c) 55 555 + 3 543 + 44 445 + 6457​

Answer 1

a) (64300+35700)+(7743+137257)=100000+145000

=245000

b)(35568+164432)+(9999+1001)=200000+11000

= 211000

c)(55555+44445)+(3543+6457)=100000+10000

=110000