题文
用简便方法计算,写出简算过程
(1)2.5×3.2×1.25 (2)4.05﹣(2.05+
)
(3)5.39+
+4.61+
(4)0.588×
+4×9.412+
×0.588.
用简便方法计算,写出简算过程
(1)2.5×3.2×1.25 (2)4.05﹣(2.05+
)
(3)5.39+
+4.61+
(4)0.588×
+4×9.412+
×0.588.
试题篮
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