| 怎样简便就怎样算。 (1) 57.5 - 4.25 - 15.75 (2) 125×32 (3) ×16.31 - 2.31÷![]() |
(1)57.5 - 4.25 - 15.75
=57.5 -(4.25 + 15.75)
= 37.5 (2)125×32
=125×8×4
=4000 (3)
×16.31 - 2.31÷
=
×(16.31 - 2.31)
=
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