个人收集整理 勿做商业用途(1)+2。6=6 (2)3。5: =5。5:4。2 (3)4=2.4 (4)= (5)62%3=7.2 (6)194=2.4+3 (7)= (8) 2= (9)12.64=8 (10)=(11)= (12) +50=21 (13) 74=31(14)75+8=27 (15)4+4。33=14 (16) (1+)1(17)+ (18)342。5 (19)(20)40: (21)4162102 (22)x:1:(23)47。112.5 (24):0.6:4 (25)::(26) 60。89。9 (27) (28) 1240%x(29) : : (30): : (31)3+2(32):0.3: (33)13189。2 (34):0。2580: (35)47.112。5 (36) (37)(38):12 (39) = (40) :=12:3(41)2.40.452=0.3 (42):=:0。1 (43)6.35=4。1(44)1。25:5=0.75: (45):=:6 (46)2.5=0。6(47) = (48): =: (49)=(50)+1.2=3.4 (51)4:6=15: (52):=: