0.79x0.46+7.9x0.24+11.4x0.079简便运算怎么做
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0.79x0.46+7.9x0.24+11.4x0.079
＝0.79x0.46+0.79x2.4+1.14x0.79
＝0.79 x(0.46+2.4+1.14)
=0.79x4
=(0.8-0.01)X4
=0.8X4-0.01X4
=3.2-0.04
=3.16
＝0.79x0.46+0.79x2.4+1.14x0.79
＝0.79 x(0.46+2.4+1.14)
=0.79x4
=(0.8-0.01)X4
=0.8X4-0.01X4
=3.2-0.04
=3.16
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