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脱式计算(能简算的要简算):(1)3.5×0.8+7.5×0....

(1)3.5×0.8+7.5×0.8-80%,=(3.5+7.5-1)×0.8,=10×0.8,=8;(2)15÷3+45×13,=(15+45)×13,=1×13,=13;(3)20-(3.84+1.21)×0.4,=20-5.05×0.4,=20-2.02,=17.98;(4)35÷[(116-23)×6].=35÷[76×6],=35÷7,=5.

题目

7.5-7.5×0.8 =7.5×(1-0.8) =7.5×0.2 =1.5

1、用竖式计算 0.396÷1.2= 0.756÷0.36= 15.6×13= 0.18×15= 0.025×14= 3.06×36= 0.04×0.12= 3.84×2.6≈ 5.76×3= (保留一位小数) 7.15×22 90.75÷3.3 3.68×0.25 16.9÷0.13 1.55÷3.9 3.7×0.016 13.76×0.8= 5.2×0.6 8.4×1.3 6.4×0.5 4.48×0.4 5.25...

0.8×3.27×7.5脱式计算 0.8×3.27×7.5 =3.27*(0.8*7.5) =3.27*6 =1962 直接计算

408-12×24 = 408 - 288 = 120 (46+28)×60 = 74 x 60 = 4440 42×50-17 = 2100- 17 = 2083 32+105÷5 = 32 + 21 = 53 420×(327-238) = 420 x 89 = 37380 (4121+2389)÷7 = 6510 ÷7 = 930 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1 0.8×[(10...

0.4×125×25×0.8 =(0.4×25)×(125×0.8) =10×100=1000 1.25×(8+10) =1.25×8+1.25×10 =10+12.5=22.5 9123-(123+8.8) =9123-123-8.8 =9000-8.8 =8991.2 1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3=24.9 9999×1001 =9999×(1000+1) =9999×...

1.46×5+12.8÷0.4×7.5 =1.46×5+3.2×7.5 =1.46x5+3.2x1.5x5 =1.46x5+4.8x5 =(1.46+4.8)x5 =6.26x5 =31.3 希望帮到你 望采纳 谢谢 加油

(1)0.2×0.6×0.5×4 =(0.2×0.6)×(0.5×4)=0.12×2=0.24;(2)(7.5-2.3×0.4)÷0.01=(7.5-0.92)÷0.01=6.58÷0.01=658;(3)3.64÷5.2×23.8=0.7×23.8=16.66;(4)178.8÷(26.4-5.6)=178.8÷20.8=44752.

卷】,不用单元的卷子,弄几份份综合练习题,不要...1、13.5×0.5表示()。2、13.5÷0.5表示(...4、用脱式计算。(12分)18.5+4.1×7.2-9.5...

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