3.6×25.4+37.9×6.4这是一道奥数题用乘法分配率

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3.6×25.4+37.9×6.4这是一道奥数题用乘法分配率
3.6×25.4+37.9×6.4
这是一道奥数题
用乘法分配率

3.6×25.4+37.9×6.4这是一道奥数题用乘法分配率
3.6×25.4+37.9×6.4
=3.6×25.4+(25.4+12.5)×6.4
=3.6×25.4+25.4×6.4+12.5×6.4
=3.6×25.4+25.4×6.4+12.5×8×0.8
=25.4×(3.6+6.4)+100×0.8
=254+80
=334

用计算器！

3.6×25.4+37.9×6.4
=3.6×25.4+(25.4+12.5)×6.4
=3.6×25.4+25.4×6.4+12.5×6.4
=3.6×25.4+25.4×6.4+12.5×8×0.8
=25.4×(3.6+6.4)+100×0.8
=254+80
=334

3.6×25.4+37.9×6.4
=3.6×25.4+（25.4+12.3）×6.4
=3.6×25.4+25.4×6.4+12.3×6.4
=（3.6+6.4）×25.4+12.3×6.4
=254+12.3×6.4
=254+78.72
=332.72
简便了一些，但好象还有更好的方法

3.6×25.4+37.9×6.4
=3.6×25.4+（25.4+12.3）×6.4
=3.6×25.4+25.4×6.4+12.3×6.4
=（3.6+6.4）×25.4+12.3×6.4
=254+12.3×6.4
=254+78.72
=332.72

计算：3.6*（这是乘号）25.4+37.9*6.4 计算：3.6*（这是乘号）25.4+37.9*6.4 3.6×25.4+37.9×6.4这是一道奥数题用乘法分配率 3.8*25.4+37.9*6.4(简算） 32.8×6.4＋1.4×25.4＋58.2×3.6简便计算如下：一、简便计算3.6*25.4+37.9*6.4 2008/2008 2008/20091 1/2+5/6-7/12+9/20-11/30二、应用题一件工作,甲先做8小时,乙再接着做14小时可完成.若甲先做6小时,乙接着做20小时也可完成.求甲、乙单独做各需要 3.6+6.4-3.6+6.4怎么简便运算 31.4*3.6+43.9*6.4 5.48×3.6+6.4 3.6×1994.4+2006.9×6.4要巧算 1994.4×3.6+2006.9×6.4简算巧算:3.6×2.36+3.61×6.4 12x+3.6=6.4 6.4×5.2+3.6×5.2 简算（3.6*46.4+58.9*6.4）/17= 6.4×2.24+2.24×3.6,简便方法计算 3.6+6.4/0.8怎么简算 3.35×6.4×2+6.7×3.6【简算】,