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270➗45➗2简便方法

270➗45➗2简便方法 270➗45➗2 =270÷(45*2) =270÷90 =3

630÷[(84一39)×2]的简便计算 630÷[(84一39)×2] =630➗(45x2) =630➗90 =630➗10➗9 =63➗9 =7

=0.45➗(10➗4) =0.45➗10✖️4 =0.045✖️4 =0.18

(385/5+245/5)/6=(77+49)/6=126/6=21

12.5➗(50➗8)简便方法 12.5➗(50➗8) =12.5*8÷50 =100÷50 =2。

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

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

45➗(1-1➗2.5)➗2.5 =45➗3/5➗5/2 =45x5/3x2/5 =30(页)

540➗(54*2) =540➗54➗2 =10➗2 =5

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:

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