这样简便就怎么算
|
| (1)27÷0.35×1.3 =
=
(2)19-18.9÷1.4 =19-13.5 =5.5 (3)125×408 =125×(400+8) =125×400+125×8 =50000+1000 =51000 (4)0.25×1.25×32 =(0.25×4)×(1.25×8) =1×10 =10 (5)0.4×98+0.8 =0.4×98+0.4×2 =0.4×(98+2) =0.4×100 =40 (6)12.5×1.7+12.5×8.3 =12.5×(1.7+8.3) =12.5×10 =125 |
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