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32x12.5x2.4简便计算

960

5x32x25x125x6 =(8X125)X(4X25)X(6X5) =1000X100X30 =3000000 亲,你好 如果你认可我的回答,请及时点击【采纳为满意回答】按钮~ 手机提问者在客户端右上角评价点【满意】即可。 你的采纳是我前进的动力~~ ~如还有新的问题,请不要追问的形式发...

(2)7.2X(36.3-16.3) (3)100X0.57+2X0.57

5X1.03X0.2 =(5x0.2)x1.03 =1x1.03 =1.03 32X1.25 =4x(8x1.25) =4x10 =40 0.45X99 =0.45x(100-1) =0.45x100-0.45 =45-0.45 =44.55 53X10.1 =53x(10+0.1) =53x10+53x0.1 =530+5.3 =535.3 4.2X6.51+3.49X4.2 =4.2x(6.51+3.49) =4.2x10 =42 9.99X1....

32 x 5/4 x 3/8 =(4 x 5/4 ) x (8 x 3/8) =5 x 3 =15 希望我的回答对您有帮助,满意请采纳,谢谢。

=12.5*(8*4)*25=(12.5*8)*(4*25)=100*100=10000

12.5X32X0.25 =12.5X(8X4)X0.25 =(12.5X8 )X(4X0.25) =100X1 =100 38.5-5.38+61.5-4.62 =( 38.5+61.5)-(5.38+4.62) = 100-10 = 90 0.75X1.6+1.4X0.75+7.5 = 0.75X1.6+1.4X0.75+0.75X10 = (1.6+1.4+10)X0.75 =13X0.75 =9.75

5x+1>3(x?1)12x?1≤7?32x,由5x+1>3(x-1),得 5x+1>3x-3, 2x>-4, x>-2…①由12x-1≤7-32x,得12x+32x≤82x≤8,x≤4…②由①②得-2<x≤4.

5x^2-32x+48>0 (5x-12)(x-4)>0 x>12/5且x>4 或 x 4 或 x < 12/5

5x?1>3(x+1)①12x?1≤7?32x②,由①得:x>2,由②得:x≤4.故不等式组的解集为2<x≤4.故选D.

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