人教版七年級(jí)上冊數(shù)學(xué)有理數(shù)計(jì)算題分類及混合運(yùn)算練習(xí)題200題

1、. . jz* 七年級(jí)數(shù)學(xué)有理數(shù)計(jì)算題分類及混合運(yùn)算練習(xí)題200題有理數(shù)加法1、 9+132、 12+27 3、 28+344、67+925、 (27.8)+43.9 6、 23+7+ 152+65 原那么一：所有正數(shù)求和，所有負(fù)數(shù)求和，最后計(jì)算兩個(gè)數(shù)的差，取絕對(duì)值較大的數(shù)的符號(hào)。7、|52+31| = 8、 52+| 31| = 9、38+22+62+78= 10、 8+10+2+111、 32+0+ +41+61+2112、 8+47+18+2713、 5+21+95+29 14、 8.25+8.25+0.25 +5.75+7.5 15、 6+7+9+2 . . jz* 16、 72+65

2、+-105+2817、 23+| 63| +| 37| +7718、19+195+4718、 +18+32+16+2620、 0.8+1.2+0.6+2.421、 8+321+2+ 21+12 22、 553+532+452+3123、 -6.37 +343+6.37+2.75 原那么二：湊整， 0.25+0.75=1 41+43=1 0.25+43=1 抵消：和為零有理數(shù)減法79 =79 = 0(9) = (25)(13) = 8.2(6.3) (321)541(12.5)(7.5) = = = . . jz* (26)(12)1218 1(21)(+23) (41)8581=44 =2 =

3、41(20)(+5)(5)(12) (23)(59)(3.5) | 32| (12)72(5) =8 =39.5 =23 +103745271051633.27 +717273=7011=10 =0 0.5 3416.75 521+6.1 4.3 2.15.1 =4 =7.4 32(143)(132)(+1.75) (332)(243)(132)(1.75) =1 =2.5 843597461392443+61+(32)25=13127=743. . jz* 0.5+41 2.75+21+4.3 4+2.3 +4=3.5 =2 原那么三： 結(jié)果的形式 要與題目中數(shù)的形式保持一致。如確定是分?jǐn)?shù)還

4、是小數(shù)，分?jǐn)?shù)必須是帶分?jǐn)?shù)或真分?jǐn)?shù)，不得是假分?jǐn)?shù)，過程中無所謂。有理數(shù)乘法932132 0.26 231 0.5=6 =0.04 =31 31 531 134 100.5 38334 1.8=6 =60 =0.9 0.25744 77354127=4 =518421 0.754 96 0.25481. . jz* =12 =2 74181+14356 65439736 =3263+12 =302728 =19 =25 43 8340.466 1222131115 =6+1+0.3 =666322+55 =4.7 =96 2543 25212541369465127=2543+2141=1630+

5、21 =25121=25 =3721原那么四：巧妙運(yùn)用運(yùn)算律. . jz* 187+43659772 31(214372)(58)(165) =28+5460+56 =31(1427)(58)(165) =78 =289有理數(shù)除法18 3246 57 3535242 6= 6 =4 =19 =23=7 +215731399 0.258136 13132=95= 131=2 =40211 474376(97) 0(341)(7)=167=1849=0 331412476 62518181=36 =471=1171131 3318714383438765=274=21=2032983+43433.

6、5 610.573211721651837=6+21-1 =2731732 =791168117 =621=1 =427=643. . jz* 5631214575 25275125354 =566554=75125751253541=4 =125(75+75+1 ) =125717=1841原那么五： 結(jié)果的形式 要與題目中數(shù)的形式保持一致。如確定是分?jǐn)?shù)還是小數(shù)，分?jǐn)?shù)必須是帶分?jǐn)?shù)或真分?jǐn)?shù)，不得是假分?jǐn)?shù)，過程中無所謂。0.8112+4.8722.273+0.8119=0.8(112+119)5247251137=5435481577=35201577=35205152=745152=51057

7、4有理數(shù)混合運(yùn)算1275420361 154731872.4=10+948+35 =52=6 27374 5711521141152321 181=2714=1521457532198=12457598= 2831198=63622=96355. . jz* 51 5515 31211+14372421=25 =31211+1437242 =142+912=9 13320.3472+31 13750.34 8 25 5=1332+31 13 0.34 72750.34 =3 =130.34=13.34 13 134131671487 521+441381=2 =8+141=6431650+35

8、2 20.5 341+6.75521=8+251107=0.5521+6.75 3.25 =31103=4 17887.21+43212+53211912.79 6(4)+(32)(8)3 =17887.21 12.79+43212+532119=24+43 =178100+97 =25 =175 72(21)+| 121| 9(4)+ (60)12 =175=366=31(149)175+218(421) | 3| 1015314382310.04 =149712+218(42) =103+5 =6+47+0.03=6+1.75+0.03 . . jz* =27+7216=83 =4107=

9、4.22 153327165221231321+11817 161 7=5832352=(3727+1835)76 7=503=(3727+1835)6 =1421+335=432有乘方的運(yùn)算：22322 31433431 2312324=18 =3 =17 =1+2=1 =916=1692 22232343242522 23232=21=6821=5432=122=4096 =2 234 23=69=54 222 323222 3)3(3131221+221=2 =427+1 =221+221=30 =0 0233322222138 .02323132221=24 =441345=16461

10、=1+32=31 . . jz* 243(321) 0 6+22 5110+82243 =0 =551=20 51 55.24.025110.53132232323=11=2 =161=161=4 423+6 13218312273127+223+6231=42 = 23=49+1854=97 42-8321-22 2223451158747=221=221=0 222 343512692963623121=4+4 5=24 =9 =1 )2(2114. 033341 +10.531223=273.3=30.3 =1+3=2 43671+33235331283+233225. 01=4+16=

11、20 =27+218=43 . . jz* 過關(guān)測試2( 3)22. 12411()()()23523=18 =513. 11( 1.5)42.75( 5)424. 8( 5)63=0 =235.3145()26. 25()()( 4.9)0.656=485=31511.22( 10)5()58. 323( 5)()5=8 =459.25 ( 6)( 4)( 8)10. 1612()(2)472=28 =17211.2( 16503)( 2)512. 32( 6)8( 2)( 4)5=8+251107=48+880=31103=120. . jz* 13.21122()(2 )223314. 199711(10.5)3=121=16115.2232 3()22316. 232()(1) 043=9 =16917.4211(10.5)2( 3) 318. 4( 81)( 2.25)()169=