Question

Tinh nhanh 

3,265+ 4,572 + 2,735 +1,428

=

=

 

=58

(10,38 +12,58 +14,68 )-(0,38 + 4,68 +2,58)

=

=

 

Answer 1

=(3,265+2,735)+(4,572+1,428)

=6+6

=12

Answer 2

3,265 + 4,572 + 2,735 + 1,428

=(3,625 + 2,735) + (4,572 + 1,428)

=6,36 + 6

=12,36

(10,38 + 12,58 + 14,68) - (0,38 + 4,68 + 2,58)

=(10,38 - 0,38) + (12,58 - 2,58) + (14,68 - 4,68)

= 10+10+10

=30