用简便方法计算3.5%×9.9 4.62+
用简便方法计算3.5%×9.94.62+9.94×0.6+0.06×960....
用简便方法计算3.5%×9.9 4.62+9.9 4×0.6+0.06×960.
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推荐于2016-08-05
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(1)3.5%×9.9, =0.035×(10-0.1), =0.035×10-0.035×0.1, =0.35-0.0035, =0.3465;
(2)4.62+9.9, =4.62+10-0.1, =14.52;
(3)4×0.6+0.06×960, =4×0.6+0.6×96, =(4+96)×0.6, =100×0.6, =60. |
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