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1、 1口算62:8 = _ : _12 :15 = _ : _30: 72 = _ : _56: 28 = _ : _0: 24 = _ : _ 77 :56 = _ : _脱式293453 3 36+-27 48 8 1556595 1+ 9 66762 -13 5 13 5方程x - 2x -1x -1=3= 212 =244B36QP12 2口算12:30 = _ : _120 : 32 = _ : _82: 410 = _ : _36 :94 = _ : _63:117 = _ : _57 :95 = _ : _脱式383 4 3 375+ + 6 - 68 7 8 7121284 71
2、921939-+9 27 99方程17 - 2x3x +1x -1=1= 3= 6322B36QP12 3口算48: 28 = _ : _34 :85 = _ : _14:91= _ : _74 :111 = _ : _15: 54 = _ : _143: 77 = _ : _脱式363724352577335101-99 +10105方程4- x3y -1x - 4=1= 5=16342B36QP12 4口算320 :100 = _ : _ 33: 21 = _ : _ 54 :36 = _ : _25:35 = _ : _ 126 : 32 = _ : _ 26 :143 = _ : _脱
3、式15 3 10334 5 5 18+-21 4 21 4 6 953778477835+153- 0.653方程2( + )x 18 + x5x - 6=1= 3= 8333B36QP12 5口算45:75 = _ : _2 :165 = _ : _55: 65 = _ : _94: 235 = _ : _216 :126 = _ : _18: 24 = _ : _7脱式387+ 3345 5 3 5 + 7 8 8 7311 8 11595453 20 +56+12 9 125 方程9+ 2x2x - 42x + 4=5=10= 6335B36QP12 6口算78:84 = _ : _7
4、:162 = _ : _28: 54 = _ : _280 : 91 = _ : _48: 56 = _ : _30 :135 = _ : _2脱式1634212343+-4544321588+722745421111方程5x - 76x -1x + 4=3=1= 4635B36QP12 7口算32:80 = _ : _3:132 = _ : _72 :32 = _ : _105 : 35 = _ : _240 : 320 = _ : _350 : 42 = _ : _3脱式452 412 3 4 12 12 + 13 7 7 13 133+ +3 587 + 1 57 1125+ 9 111
5、37 1395方程3x -1x +115 - x=1= 3=1856B36QP12 8口算35 :175 = _ : _144 : 36 = _ : _185 :148 = _ : _36: 60 = _ : _38: 57 = _ : _111: 74 = _ : _脱式1123 5 4 -4 7 313+52211 3 1 6 5 3 7 + 7 8 6-26 558方程x +1x + 54 + 2x=4= x= 4663B36QP12 9口算440:65 = _ : _5:54 = _ : _240 : 42 = _ : _48 :84 = _ : _44 :84 = _ : _11:1
6、111 = _ : _脱式47893 8+ 7 93 2 3 2 4 3 4 334 4493471 356 + 44 -8 434- 50 7 7 508方程2x -1x - 45 - 3x=1=1=1332B36QP12 10口算12 :1224 = _ : _12: 4824 = _ : _667 : 2001 = _ : _48: 40: 28 = _ : _ : _30: 40 :50 = _ : _ : _ 12: 24 :30 = _ : _ : _脱式11 1 13 3 3 5 4+ +8128 12 4 4 6 325 2 2 3+ 1 41 25 24+ 99 5 5 44
7、方程8x - 202x +1y + 8=4= 3= 7342B36QP12 11口算15:30:50 = _ : _ : _42: 28 :105 = _ : _ : _63:126 : 72 = _ : _ : _24: 44: 68 = _ : _ : _ 11: 22 :99 = _ : _ : _ 21: 48: 60 = _ : _ : _脱式3452 532 5 636357 9535+ 59796方程20 - x2x + 42x - 5=8=10= 3233B36QP12 12口算1.2 :1.5 = _ : _.4 : 6.3 = _ : _2.5 : 0.35 = _ : _
8、1.4 : 28 = _ : _4.8: 6 = _ : _1.4 : 3.5 = _ : _1脱式47879913672367+5828 8 554-3 15 9 6方程5x -144x +13x - 4=1= 2=1658B36QP12 13口算1.5 : 3.6 = _ : _1.5 : 6.6 = _ : _3.6 :1.6 = _ : _1.5:1.05 = _ : _1.6 :18 = _ : _24 :1.6 = _ : _脱式443 3 3 27 7 14 323+ 7725+2511 1 131811+816 - 14 + 7012 8 1288方程3x + 54x +12x
9、 +1=16= 5= 22512B36QP12 14口算1.8: 54 = _ : _.9:9 = _ : _1.8 : 0.09 = _ : _0.57 :19 = _ : _0.9 : 0.099 = _ : _6.8 : 0.17 = _ : _1脱式42 43+ 3 5 1 1 13- 48+512 1613 3 4 13 13+ 2 7 7 12 12595+7 + 1119方程7x -13x - 59x - 5=17= 5= 20242B36QP12 15口算22: 0.14 = _ : _4: 2.8 = _ : _21:14.7 = _ : _0.21:1.19 = _ : _
10、2.1: 28 = _ : _2.2 :1.111 = _ : _脱式7 1 211 45- 0.125+ + 248349165 7 388+6-911 8方程x + 4xx + 4=32= 6 - x= 2253B36QP12 16口算2.2: 4.84 = _ : _.23:1.15 = _ : _88 : 0.22 = _ : _0.46 : 6.4 = _ : _22 : 0.99 = _ : _9.2 : 0.69 = _ : _0脱式6136325 4624385683 5 31+ 0.3752-3+1111 6 8 48方程2x -13x -17x -1+1= 6=13+ 3
11、= 53224B36QP12 17口算0.42 : 2.4 = _ : _.38 : 7.6 = _ : _6.4 : 2.4 = _ : _0.92 : 0.23 = _ : _0.96 : 2.4 = _ : _85 : 0.51 = _ : _0脱式48101882515711525111253413 24 241+ 9 11-+-96方程x3x + 25x - 2x + 2=- 2 = 4-1= 582536B36QP12 18口算12.6: 7 = _ : _12 : 7.2 = _ : _8.7 : 5.8 = _ : _13.5 : 9.6 = _ : _8.8:16.5 = _
12、 : _8.4: 21= _ : _脱式58581 6 2 6+ 3 7 3 7+151175 157194 + 2119+12 18 24 7225 25方程2x + 82x - 77 + 3x-1= 5= 4+1= 6638B36QP12 19口算4.25 : 6.8 = _ : _6.66 : 7.4 = _ : _20.8:11.2 = _ : _9.36 :1.08 = _ : _17.6 :14.3 = _ : _12.3:16.4 = _ : _脱式1 4 5 9 6333 318+32324347 + 5265 + 578+157 3343方程2x -12x - 3x - 5-
13、6 =1- 4 =1+ 4 = 9352B36QP12 20口算3.23 : 3.4 = _ : _.72 : 2.24 = _ : _66.7 : 6.9 = _ : _6.7 : 33.5 = _ : _3.66 : 73.2 = _ : _2.91: 9.7 = _ : _6脱式119 108 - 399 +95527517115574 5 4 4 4 +1111 7 7 7 7方程3x + 47x + 33x + 6+2 = 8+ 2 = 3- 5 = 73242B36QP12 21口算1223 25 1:= _ : _:= _ : _= _ : _:= _ : _= _ : _34
14、57 6557 111 2:= _ : _:12 813 415 7脱式23 151115 1119+3839913942019+2019201910 17 10 172020方程3x - 2524 - xx - 4+9 =10+ 3 = 7- 5 = 20542B36QP12 22口算15292 413 5:= _ : _= _ : _:= _ : _:= _ : _= _ : _7 917 618457 311 5: = _ : _:16 513 6脱式11 11 2077-101-13 13 33252559345 1473436+ + 9 47 109 7 109方程3x + 22x
15、- 52x -1-1= 9- 4 =1+1= 6364B36QP12 23口算121 3215 2:= _ : _:= _ : _:= _ : _23 153 10527 115777 34 4:= _ : _:= _ : _:= _ : _138 169 19脱式594334 1 463+-21 + 21 21 7 7754305 1811+58+ 41+688方程10 + x3x + 2x - 474-2 =1+1= 6=1553B36QP12 24口算3534815 10:= _ : _:= _ : _= _ : _:= _ : _2015 2533 117149 1811 55:= _
16、 : _:= _ : _30 1513 2624 72脱式56699544-465 104520060074 2 3 2 - +1511720081217 3 412 21方程2x -14x -152x + 4+2 = 4+ 7 =12= 8653B36QP12 25口算7147355 2:= _ : _:= _ : _:= _ : _= _ : _30 2537 11136 931 21 3249 7:= _ : _:= _ : _:42 35 11372 13脱式535535759533 + 44 + 24 - 0.6+39 12 123 14 41418979925+25 16 25 1
17、6 16方程3x - 2x + 35x + 9+8 =16+ 5 = 7-1.8 = 8825B36QP12 26口算4371 51 7:1= _ : _= _ : _2 : = _ : _3 : = _ : _135 72 1123412 1411 222:= _ : _:= _ : _175 1545脱式21326 0.3756 + 7 + 37.5%33589929999 87 + 87 0.61005方程3x -15x -113- 3x-4 = 6= 7= 2222B36QP12 27口算17113135:= _ : _2:6 = _ : _4 :2 = _ : _6114592921
18、7231:3 = _ : _5 :4 = _ : _1 :3 = _ : _35834脱式35654734280% +832341207235 35%12.5%28方程21- x3x + 23x - 5+2 = 5- 2 = 9+ 2 =12354B36QP12 28口算41:3 = _ : _17 :9 = _ : _131 : = _ : _1 559372 811:2 = _ : _78 32:= _ : _8 28:= _ : _21077 727 15脱式242524425%81.2599 +12511237323%16 +3415 8100方程3x -115x -18x + 5-4
19、 = 6+ 2 = 4- 7 = 8433B36QP12 29口算472315124:6 = _ : _3 :3 = _ : _5 :2 = _ : _58163731:5 = _ : _17 :5 = _ : _118 :2 = _ : _41455799脱式4453837937.5%+9467143263200439 + 25+20034413方程x - 521- 3x2x +1024 -=1820 -=15- 5 = 94315B36QP12 30口算78211227:1 = _ : _6 :9 = _ : _4 :6 = _ : _7325711213112 :7 = _ : _20
20、:5 = _ : _2 :4 = _ : _2251048脱式120002001166 412000 20002027383 4 3 3- - 8 7 8 79+15 5方程x - 31+ x2x - 3+18 = 21=12 -8+ 4 = 7533B36QP12 参考答案练习 1:练习 5:35: 4 ; 4:5 ; 5 :123:5 ;11:13 ;12:73: 4:6; 11:8; 2:124 :55; 2:5 ;11659627857125012.5313894931713练习 2:练习 6:23:5; 15: 4; 18: 47:5; 1:5; 7 :1313:14 ;1:6 ;1
21、4: 27 ;40 :13 ;6:72:9344344251281353543725327163练习 7:练习 3:2:5 ; 9: 4 ; 3: 4112:7;2:5;2:31: 4; 3:1; 25:33:7; 2 :13; 5 :1842413175619253157036605113531497练习 8:练习 4:1:5; 4:1;: 2; 5: 4 ;33:52:316:5; 11:7; 3: 235:7 ;63:16 ;2 :11606178411147723140.516B36QP12 练习 9:练习 13:85:13 ;:6 ;40:7 ;4:7 ;11: 211:1015 :
22、12; 5: 22 ;10:74: 4515 :1;9: 4;8942671475169997271611.5练习 14:练习 10:11:30 ;20 :1;100 :1140 :11:102 ;: 4:5 ;1: 402 ;2: 4:5 ;1:312:10:79:90 ;3:100 ;341366101547245166255545.563练习 11:练习 15:36:6:10 ;6: 4 :15 ;1: 2:9 ;7 :14 :8100: 7 ;60:7 ;10:7 ;3:17 ;3: 40:11:17 ;7 :16 : 20200 :10134517951342777954262339
23、664136052练习 12:练习 16:42:5 ;50:7 ;4:52:55 :11;400 :1;200 :940:3:9; 1: 20 ;1:5 ;23 : 320 ;72619236181039058696294744B36QP12 练习 17:练习 21:7: 40 ;8:3;4:1;12:53: 4 ;2:3;15:8 ;30:777 :30111: 20 ;4500 :328 :13 ;205916176710181251511391020206434854练习 18:练习 22:92:5 ;:5 ;5:3;3: 245: 328 :159 :10 ;5:32 ;19 :14
24、;78 :8566: 6535: 48 ;675759471010919283149.511283352212练习 23:练习 19:15: 46 ;35: 32 ;14:3;55 :1819:953:8 ;: 4 ;9 :10 ;13:7 ;2326:316 :13865: 49 ;02124912.51100017504141523374353练习 20:练习 24:19: 20 ;29:3;1:5 ;1: 203:104:1;5:6 ;1:1;1: 23:5311:1;1: 4 ;15511110117144200644200621424520073631321010B36QP12 练习
25、 25:练习 28:53:12 ;3:5 ;5:8257 : 20 ;:9 ;7 :9 ;1: 44 ;12:510: 6321: 28 ;113:160 ;91: 72591496010382321107961.491522185练习 26:练习 2913:15 ;4:3;5177 : 25 ;18:7 ;11: 255:7 ;:8 ;86:7 ;7 :5 ;7 :34:135:81639887003100673637.5267304520037329100练习 27:练习 30:6:77 ;4 :11;9:54:9459:8 ;:3;2:3;4:1;7 :102:317:3;16 :15 ;33510402256241200120026744053201215318116B36QP12