Question

Tính nhanh:

1.07 x 47.95 x 2 + 2.14 x 52.05 

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Answer 1

= (1,07 x 2) x 47.95 + 2,14 x 52,05

= 2,14 x 47,95 + 2,14 x 52,05

= 2,14 x ( 47,95 + 52,05) = 2,14 . 100 = 214

Answer 2

    1,07 x 47,95 x 2 + 2,14 x 52,05

= (1,07x2)x47,95+2,14x52,05

= 2,14x47,95+2,14x52,05

=2,14x(47,95+52,05)

=2,14x100

=214