急,追50(54+13分之9)/9 276*7分之2/27.6 9.25*9.9 5.48+8.73+4052+1.27

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  • (54+13分之9)/9

    =(54+9/13)/9

    =54/9+9/13/9

    =6+1/13

    =6又1/13

    276*7分之2/27.6

    =276*2/(7*27.6)

    =10*2/7

    =20/7

    =2又6/7

    9.25*9.9

    =9.25*(100-1)

    =925-9.25

    =915.75

    5.48+8.73+40.52+1.27 *

    =5.48+8.73+1.27+4052

    =5.48+40.52+10

    =46+10

    =56

    9.7/1.25/0.8

    =9.7/(1.25*0.8)

    =9.7/1

    =9.7

    17.5-4.25-5.75

    =17.5-(4.25+5.75)

    =17.5-10

    =7.5

    0.125*0.25*32

    =0.125*8*0.25*4

    =1*1

    =1

    (6.3-6.3*0.9)/6.3

    =6.3(1-0.9)/6.3

    =1-0.9

    =0.1

    (20分之7+50分之11+25分之6)/5分之2

    =(7/20+11/50+6/25)*5/2

    =7/20*5/2+11/50*5/2+6/25*5/2

    =7/8+11/20+3/5

    =7/8+(11+12)/20

    =7/8+23/20

    =(35+46)/40

    =81/40

    =2又1/40

    168.8/(24.3*2-6.4)

    =168.8/(24.3*2-6.4)

    =1688/(243*2-64)

    =844/(243-32)

    =844/211

    =4

    16分之11+13分之8-(16分之11-13分之5)

    =11/16+8/13-11/16+5/13

    =11/16-11/16+5/13+8/13

    =0+1

    =1

    (4分之3+5分之2)*20+12分之5

    =(3/4+2/5)*20+5/12

    =3/4*20+2/5*20+5/12

    =15+8+5/12

    =23又5/12

    2500/6分之5+2500*5分之4

    =2500*6/5+2500*4/5

    =2500(6/5+4/5)

    =2500*2

    =5000

    (3分之2+9分之7*28分之9)/12分之11

    =(2/3+7/9*9/28)/(11/12)

    =(2/3+1/4)/(11/12)

    =(2/3+1/4)*(12/11)

    =[(8+3)/12]*12/11

    =11/12*12/11

    =1