1、(1)0.8331.25(2) 101718 910 1718(3)9.564.875 1.4478(4) 6 34 16 14(5)4.61 8.4 1 538 811 38(6)41 623 35(7)18 2 35 1920 25 1920 1920(8)2 80 1.25225 813(9)251.2548(10)0.73.94.36.1(11)7.35997.35(12)47817917(13)46101(14)15.62 427 57(15)142 14314 34(16) 34 611 317 58(17) 89 715 815 98 89(18)3 59 720 1136(19
2、) 76 715 815(20)4 3 1 257 13 27 23(21) 57 43 27 43(22) 75 149 59 34(23) ( )2438 56 712(24)20532656(25) ( )14 52 14 16(26)4 1 1.750.435 14(27) ( )4513 15(28)2 ( )16 34 712(29)0.31(3.32.95)(30) ( )( )56 13 58 14(31)( ) 23 14 56 45 511(32) ( )3525 17 19(33)24( )14 16 13(36) ( )89 78 716 18(37)8.64.325(
3、38) ( 0.25)67 512 58(39)3.6(4.72.3) 1.237(40) 518 174 29(34) (41)60( )58 1110 38 1011 512 415 12(35) ( ) (42) ( )920 12 25 45 815 920 23 112(43)12( ) (50) 171213 14 611 311(44) (910 ) (51) ( )45 34 57 38 156(45) ( ) (52) (20.121 )5.149 34 716 14 67(46)0.387 4 (53)0.2 (0.15 )1950 1950 56 920(47) ( )
4、(54) 18 12 35 109 15 58 14 23(48) (10 ) (55)3.641( 2.09)512 16 13 2110(49)25 (56)125*3+125*5+25*3+25135 13(57) (23/4-3/4)*(3*6+2) (64) 3/7 49/9 - 4/3(58)8/9 15/36 + 1/27 (65) 12 5/6 2/9 3(59) 7.65.41.95.4 (66) 8 5/4 + 1/4(60)24 (5 ) (67) 4/7 5/9 + 3/7 5/9 23 18(61)15 16 (68) 7/8 + ( 1/8 + 1/9)421 87
5、(62) ( )45 (69) 3/4 8/9 - 1/313 15 415(63) 99*3+101*11*(101-92) (70) 6 ( 1/2 + 2/3 )(71) 31 5/65/6 (77) 75/49+3/14(72) 5/9 1814 2/7 (78) 84/5+811/5(73) 148/7-5/612/15 (79) 9/7 -(2/7-10/21)(74) 6 3/8 3/8 6 (80) 4/525/16+2/33/4(75) 5/2 -( 3/2 + 4/5 ) (81)17/32-3/49/24(76) 9 5/6 + 5/6 (82) 32/9+1/3(83)
6、 3/14 2/3 + 1/6 (89) 7132(84)9/22 + 1/11 1/2 (90)5/311/5+4/3(85) 45 2/3 + 1/315 (91)7/19 + 12/19 5/6(86) 302550 (92)( )( 1 )14 58 14 89 13(87)6 2 (93)31 13 35 23 17 67(88)5/7 3/25 + 3/7 (94)1/52/3+5/6(95) (102) ( )25 37 47 52 16 14 1113(96) ( ) (103)4 414 23 45 815 45 45(97) 8 1.25 (104)5/2 -( 3/2 +
7、 4/5 )135 813(98) ( ) (105) 58 15 14 38 57 23 1415 19(99) (10 ) (106) ( )512 16 13 49 34 716 14(100) 8 5/4 + 1/4 (107) 7/8 + ( 1/8 + 1/9 )(101)4/7 5/9 + 3/7 5/9 (108)6(1/2+2/3 )(109)3/4 8/9 - 1/3 (117)7 5/49 + 3/14(110) 6 ( 1/2 + 2/3 ) (118)8 4/5 + 8 11/5(111)31 5/6 5/6 (119) 9/7 (2/710/21)(112)5/9
8、18142/7 (120)4/525/16+2/33/4(113)148/75/612/15 (121)17/32-3/49/24(114)3 2/9 + 1/3 (122)5/71/7+3/7(115) ( ) (123) 57 38 156 15 58 14 23(116)24 (5 ) (124) 15 1623 18 421 87(125)( )45 (128) 1( + ) 13 15 415 4831(126)(1 ) (129) 17 86529721327(127) 3 (130) (1 ) 91254 615297( + ) 1291252543015432615( ) +
9、( )( + ) 8761583246543291( + )3.5 (1 ) 4 + + 41525328314 ( + ) 12(1 ) 2 51321657335461(1 ) 4 8 + 7 5327432617165( ) ( + )(1 ) 3+ 654392213851431+ + 72( + ) + 9472185213487321+ + + + 4 987632835463115832+ + 2 30( + ) 54812984316152+ + 6 + 5873254611250983134912( + ) + + 4 2134519483655218448( + ) 9+
10、24( + ) 312425698618( + )6027 5 ( )70 53416151797 8+ 2 15 +1596553734( + )72 72( + ) ( + )9+ 9843221349513430( + ) ( + ) 5+ 21367126341875187+ 5 ( ) 24 ) ( + )231624557447( + ) (32 17) (25 ) 1523153411254314 ( ) 325186925716941256125912795 65243 )7321495(63(21 21) (99 )9 23164)(857344110 ( ) ( )30 5
11、4681543210654 4 58 41 6510951578181 ( ) 547215462535482185 ( ) 25 ( ) 18 12 35 109 13 52 310 45 14 73 7103 ( )1511 + 7125215 311 573857 + 18( + ) 10 10 815627109495656 56( ) 5 ( )34 34 25 15 29 56 45 23 ( )34 65 94 79 16 24( ) 414 334 13 89 910 14 ( ) 9 9 9 815 712 25 1514 47 3724( )3 ( )56 13 34 12
12、 78( ) 511 45 13 56 415 78 145( ) (1 )59 16 518 15 13 1516 811 94 311 49 720 1125 1425 720( ) ( ) 23 12 23 27 310 12 13 18 解方程 35612124312 12 = ( + )=547816342753 = = (6) 25107554210965 = 2+ = =2027 4325 35 5341 121 53 12832157324165 =13.4 8 3 834X415 = = 46 =27216874332= = = 125 310 537298615 = 439
13、=29 + = 4356421 21621 =4 103322041x 8)6.2(x6X5 =13.4 X- X= 463825 13 3105= = =1952185454281 =12 = = 3241537298615 = -0.25= = 35642141X3644+0.7=102 + =42 + =10532141- =400 -0.125=8 7- =283 32+ X=18 ( + )= 0.375=37 16 38 1312 65 + =4 7312 52.45832180.365- = (- 4.5) = 7 34 35 23- 0.8= 16+6 20 8.5= 1.5
14、- -4= 21 45 = - =14 + = 37 89 525341207+5= + = 5 - = 45312328531 口算: = 7 = = = 2134939243763212= = 3= 1 = 82124= 2= 12 = 240 = 125107434 = 8 = = = 093548732 = = = = 4321531867 = 12= = = 1351454 = ( + )12= 1 = = 9466371 = 3 = = 1= 741932841564 59 20. 29160%2102% 求比值1 : 0.12 : 0.323248 化成最简单的整数比。: 5.6 : 0.7 15 : 12465 简算方法算(1) 24 (2) (3) ( )8543214213(4) (5) ( + )28 (6) + 659240341755341(7)3 (8) (9) ( + )24158471543024365(10) (11) 58 41 (12)45818213(1)(13) (14) ()6+82731457 解比例(1) 6 = (2) = x78 14 16 25 x(3) = 26 (4) = 50.1 34 x 38 x