(1)1.25*0.25*32(2)5/7+9/8*5/9+3/8(3)(3/7+5/14)/11/21-2/5能简算的要简算

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(1)1.25*0.25*32(2)5/7+9/8*5/9+3/8(3)(3/7+5/14)/11/21-2/5能简算的要简算(1)1.25*0.25*32(2)5/7+9/8*5/9+3/8(3)(

(1)1.25*0.25*32(2)5/7+9/8*5/9+3/8(3)(3/7+5/14)/11/21-2/5能简算的要简算
(1)1.25*0.25*32(2)5/7+9/8*5/9+3/8(3)(3/7+5/14)/11/21-2/5能简算的要简算

(1)1.25*0.25*32(2)5/7+9/8*5/9+3/8(3)(3/7+5/14)/11/21-2/5能简算的要简算
(1)1.25*0.5*32
=1.25*0.5*(8*4)
=(1.25*8)*(0.5*4)
=10*2
=20
(2)5/7+9/8*5/9+3/8
=5/7+5/8+3/8
=5/7+(5/8+3/8)
=5/7+1
=12/7
(3)(3/7+5/14)/11/21-2/5
=(3/7)/(11/21)+(5/14)/(11/21)-2/5
=9/11+15/22-2/5
=3/2-2/5
=15/10-4/10
=11/10

(1) (1.25*8)*(0.25*4) = 10*1 = 10
(2) 5/7+5/8+3/8 = 5/7+1 = 12/7
(3) (6/14+5/14) / (11/21)-2/5 = (11/14) / (11/21) - 2/5 = 3/2 -2/5 = 15/10-4/10=11/10