〖5.71+1.9〗乘号30
7.61乘号30
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过程
脱式计算,能简算的要简算.2.139÷9.3×6.2
解题思路：（1）（3）从左往右依次计算．（2）（4）运用乘法分配律简算．（1）2.139÷9.3×6.2 =0.23×6.2 =1.426 （2）2.06+2.06×99 =2.06×（99+1）=2.06×100 =206 （3）0.72×0.8÷0.32 =0.576÷0.32 =1.8 （4）3.8×1.96-3.8×0.96 =3.8×（1.96-...
脱式计算(能简算要简算)108x98
脱式计算如下：108×98 =108×（100-2）=108×100-108×2 =10800-216 =10584 【
脱式计算:一、能简算的要简算。⑤4\/13+5\/13×13\/10 = = = =
4\/13+5\/13x13\/10=4\/13+1\/2=8\/26+13\/26=21\/26
脱式计算,能简算的要简算。4.5+8.1÷9×0.9?
解题过程:4.5+8.1÷9×0.9 =4.5+8.1×0.9÷9 =4.5+8.1×0.1 =4.5+0.81 =5.31
脱式计算能简算要简算1.45×1.8+14点5×0.82
简算过程如下：1.45×1.8+14.5×0.82 =1.45×1.8+1.45×8.2 =1.45×（1.8+8.2）=1.45×10 =14.5
能简算的要简算(脱式计算)
脱式计算,能简算的要简算: 127 -(57 +12 ) =127-57-12 =70-12 =58 [1-(14 +38 )]÷1\/4 = 4-52*4 = (60-1)*6+49\/16 =360-6+3又16分之1 =354+3又16分之1 =357又16分之1 180÷2.5÷4 =180÷(2.5*4) =180÷10 =18 白做了半天！ 12...
脱式计算,能简算的要简算99×0.4÷99×0.4
99×0.4÷99×0.4 =99÷99×0.4×0.4 =1×0.4×0.4 =0.16
脱式计算(能简算得要简算)
2、39x4.6+4.6=39x4.6+1x4.6=(39+1)x4.6=40x4.6=184;3、9.6÷0.4÷3=9.6÷(0.4x3)=9.6÷1.2=8;4、0.25x0.7x40=0.25x40x0.7=10x0.7=7;5、4.32x0.52+6.68x0.52-0.52=(4.32+6.68-1)x0.52=(11-1)x0.52=10x0.52=5.2;6、4.84÷0.4÷0.5=...
完成脱式计算,能简算的要简算?
原式=7\/13 + 7\/13 - (3\/7 + 2\/7)=14\/13 - 5\/7=1\/13 + 1 - 5\/7 =1\/13 + 2\/7=7\/91 + 26\/91=33\/91 原式=4\/5 - (2\/4 + 1\/4)=4\/5 - 3\/4 =16\/20 - 15\/20=1\/20 2、解：x=3\/5 - 2\/7 x=21\/35 - 10\/35 ∴x=11\/35 解：2x=5\/8 + 3\/8 2x=...
脱式计算,能简算的要简算?
脱式计算是一个数学学科术语，即递等式计算，把计算过程完整写出来的运算，也就是脱离竖式的计算。（1）2\/3+1\/4+3\/8 =16\/24+6\/24+9\/24 =31\/24。（2）2\/5+5\/6-2\/3 =12\/30+25\/30-20\/30 =17\/30。（3）7\/8-(5\/12+1\/3)=7\/8-(5\/12+4\/12)=7\/8-9\/12 =7\/8-6\/8 =...
