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0.8x0.25x0.4x12.5 4.58➗2.5➗0.4 都...

0.8x0.25x0.4x12.5 4.58➗2.5➗0.4 都简便计算过程具体 0.8x0.25x0.4x12.5 =(0.8*12.5)*(0.25*0.4) =10*0.1 =1 4.58➗2.5➗0.4 =4.58÷(2.5*0.4) =4.58÷1 =4.58

4.5➗2.5x9/5➗0.4 =4.5x9/5÷(2.5x0.4) =8.1÷1 =8.1

(8.96-2.3-4.7)➗0.4 =(8.96-(2.3+4.7))➗0.4 =(8.96-7)➗0.4 =1.96➗0.4 =0.49

解:9000000➗25➗125➗8➗5➗4➗2 =9000000➗(25x125x8x5x4x2) =9000000➗(25x4x5x2x125x8) =9000000➗(100x10x1000) =9

方程的解是x=10800 (X➗2十600)➗750=(X➗2一600)➗600 600×(x÷2+600)=750×(x÷2-600) 4×(x÷2+600)=...

解:(1)F浮=G-G0=2N-1.6=0.4N (2)P=pgh=1x1000x10x0.2Pa=2000Pa (3)S=F浮➗ph=G浮➗ph=0.04kg➗1000kg/m3&...

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