×![]() | 675×1.4+ × -6.75 | × +125×0.26+1.25×32. |
,=97×

,=1
+
,=1
,=1
,=1
;(2)675×1.4+
×
-6.75,=6.75×140+0.6×6.75-6.75,
=6.75×(140+0.6-1),
=6.75×139.6,
=942.3;
(3)
×
+125×0.26+1.25×32.=12.5×4.2+12.5×2.6+12.5×3.2,
=12.5×(4.2+2.6+3.2),
=12.5×10,
=125.
分析:(1)97
,运用乘法分配律进行简算;(2)675×1.4+
×
-6.75,将原式转化为:6.75×140+0.6×6.75-6.75,再运用乘法分配律进行简算;(3)
×
+125×0.26+1.25×32.将原式转化为:12.5×4.2+12.5×2.6+12.5×3.2,再运用乘法分配律进行简算.点评:此题考查的目的是理解掌握乘法分配律的意义,并且能够灵活运用乘法分配律进行简便计算.
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