0.79*0.46+7.9*0.24+11.4*0.079怎样简便运算？
3个回答
展开全部
0.79×0.46+7.9×0.24+11.4×0.079
=0.79×0.46+0.79×2.4+1.14×0.79
=0.79×（0.46+2.4+1.14）
=0.79×4
=3.16
=0.79×0.46+0.79×2.4+1.14×0.79
=0.79×（0.46+2.4+1.14）
=0.79×4
=3.16
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展开全部
0.79*0.46+7.9*0.24+11.4*0.079
=0.79*0.46+0.79*2.4+1.14*0.79
=0.79*(0.46+2.4+1.14)
=0.79*4
=(0.8-0.01)*4
=3.2-0.04
=3.16
=0.79*0.46+0.79*2.4+1.14*0.79
=0.79*(0.46+2.4+1.14)
=0.79*4
=(0.8-0.01)*4
=3.2-0.04
=3.16
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展开全部
0.79*0.46+7.9*0.24+11.4*0.079
=0.79*0.46+0.79*2.4+0.79*1.14
=0.79*(0.46+2.4+1.14)
=0.79*4
=3.16
=0.79*0.46+0.79*2.4+0.79*1.14
=0.79*(0.46+2.4+1.14)
=0.79*4
=3.16
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