1、(1) +2.4=6 (2)3.5: =5:4.2 (3)1.8=2.4 (4) = 53 x108.52(5)631.8=7.2 (6) = (7)175=2.4+3 (8) = 34x52.1514(9)12.6 2=8 (10) = (11) = (12) +50% =4265.60322(13)4 13=31 (14)4.5+8=27 (15)2+4.33=14.5 (16) (1 )1 21 832(13)4 13=31 (14)4.5+8=27 (15)2+4.33=14.5 (16) (1 )1 3(17) 83(18 )3 42.5 (19) (20)1.6: : 41214.
2、0x6515210(21)3163102 (22 )x :1 : (23)4 7.1 12.5 (24):0.6 :49703 3(25) : : (26) 0.329.1 (27) 3279 7x5.360(28) x (29) : : (30) : :214821482148(31)3 + 2 (32) : 0.3: (33)13189.2 4131457(34) :0.2580: (35)4 7.112.5 (36) 31 43215(37) (38) : :12 (39) = 3215324532107(40) : =12:3 (41)2.40.452=0.3 (42) : =:0.1
3、43 418(43)6.35 =4.1 (44)1.25:5=0.75: (45) := :6 2143(46) 2.5=0.6 (47) = (48) : = :53612531576(49) = (50) +1.2=3.4 (51)4:6=15:10x2.321(52) : = : (53)2X 10 3.19 (54) : X : 0.8214345 2183(55) (56) (57) (15)170 524351(58) (59)120159 (60) (53)327684152(61)x x=21 (62)24120%x=18 (63)x-4 = 52 3251(64)40%X-
4、= (65) 7+ (66) ( + ) 14712 1387613854(67) 7 (68) -( +2 ) (69) 36514532019538172 58 32 85(70)1 (71) ( )58 2528 310 23 415 56 2021(72) ( )2 (73) 25% 45 35 12 581483(74) ( )50% (75) 25% 25%15671418(76) (77)10.5(3.8-0.8)6.3 14526(78) ( + ) (79) +0.7525481643927(80) (81)20 711 59 49 411 45 56(82) 3 (83) 0.75 215 1315 13 34 78(84) ( )40 (85) 25 38 27 916 27(86) (87) 125769 42653(88) (89) 131654 12453(90)36 42 (91) ( ) (92) 27 572 87167676(93) (94) 8 (95)78 23 78 59 79 )12783(24(96) 0.375 (97) ( )( ) 8783952365432(98) +0.8 (99) (3-0.9) (100)7- 21 54941576174