Question

Tinh nhanh:

15 x 95 +15 x 5 - 95 =??

 

Answer 1

=15*(95+5)-95

=15*100-95

=1500-95

=1405

Answer 2

15 x 95+15 x 5-95

=15 x 95+15 x 5-15 x 9

=15 x(95+5-9)

=15 x (100-9)

=15 x100-15 x 9

=1500-95

=1405

Answer 3

=15*(95+5)-95

=15*100-95

=1500-95

=1405

Answer 4

=15x(95+5)-95

=15x100-95

=1500-95

=1405