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804➗4竖式怎么算

640➗4 依次用6➗4=1余2 用24➗4=6 所以640➗4=160

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

44·28➗0·9➗4·1怎样简算 44·28➗0·9➗4·1 =49.2÷0.9 =54.66.. 答

1,有倒数键 1500→✖→️722.486→➗→914.4→=→倒数键→X→1500 2,没有倒数键 1500→✖→️722.486→➗→914.4→=→M十(存储加) 1500→÷→MR

12.6x7.6x2.32➗1.9➗1.4➗2.9如何用简便计算? 12.6x7.6x2.32➗1.9➗1.4➗2.9 =(12.6÷4)*(7.6÷1.9)*(2.32÷2.9) =3.15*4*0.8 =10.08

怎么可能是4。5500➗5➗5➗5➗5=1100➗5➗5=220➗5=44

792➗12➗3 =(792➗4)➗(3x3) =198➗9 =22

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

3.38÷18=0.187(7上面点个点,表示7循环) 2.3÷99=0.023(23上面点个点,表示23循环) 47 ÷ 22 = 2.136(36上面点个点,表示36循环) 竖式见图:

15x23x4=15x4x23=60x23=1380540➗36=540➗(9×4)=540➗9➗4=60➗4=15

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