方程的一些题,快心算5x + 12x = 19a - 8a = 5.7b + 6.2b =16x - 2x = 32a + 9a = 8.3b - 5.2b =20.3t + 12.5t = 4.3x - 2.1x = 7.5a - 3.4a = x 丶x = 4a × 5 =

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方程的一些题,快心算5x  + 12x =         19a  -  8a  =             5.7b  + 6.2b =16x  -  2x  =        32a  +  9a =             8.3b  -  5.2b =20.3t  +  12.5t  =            4.3x  -  2.1x =          7.5a  - 3.4a = x 丶x  =            4a  × 5 =

方程的一些题,快心算5x + 12x = 19a - 8a = 5.7b + 6.2b =16x - 2x = 32a + 9a = 8.3b - 5.2b =20.3t + 12.5t = 4.3x - 2.1x = 7.5a - 3.4a = x 丶x = 4a × 5 =
方程的一些题,快

心算
5x  + 12x =         19a  -  8a  =             5.7b  + 6.2b =
16x  -  2x  =        32a  +  9a =             8.3b  -  5.2b =
20.3t  +  12.5t  =            4.3x  -  2.1x =          7.5a  - 3.4a =
 
x 丶x  =            4a  × 5 =              6a  +    5a   =

       12y  + 8y =        3x × 0 =               a×a×a =
        9.4x  + 6.6x  =         16t  -  13.4t  =        12x  -8.3x =
 
2.笔算(解下列方程)
 
   10x   -   25 =30          0.5x  +  28  =52         8x  -36  = 42
 
    9.25  + 2x  =22.35     3.5x   -  6  =4.5          6.5x  + 9 =28.5

方程的一些题,快心算5x + 12x = 19a - 8a = 5.7b + 6.2b =16x - 2x = 32a + 9a = 8.3b - 5.2b =20.3t + 12.5t = 4.3x - 2.1x = 7.5a - 3.4a = x 丶x = 4a × 5 =
心算
5x + 12x =17x 19a - 8a = 11a 5.7b + 6.2b =11.9b
16x - 2x = 14x 32a + 9a = 41a 8.3b - 5.2b =3.1b
20.3t + 12.5t =32.8t 4.3x - 2.1x =2.2x 7.5a - 3.4a =4.1a
x 丶x = 4a × 5 = 20a 6a + 5a =11a
12y + 8y =20y 3x × 0 = 0 a×a×a =a³
9.4x + 6.6x =16x 16t - 13.4t = 2.6t 12x -8.3x =3.7x
2.笔算(解下列方程)
10x - 25 =30 x=5.5 0.5x + 28 =52 x=48 8x -36 = 42 x=39/4
9.25 + 2x =22.35 x=6.55 3.5x - 6 =4.5 x=3 6.5x + 9 =28.5 x=3