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1 六年级简便计算练习题用简便方法计算下面各题。(90分,42052)1125997 998+1246 431+3.2532+6.8 1252(172+252) 4001258 25(378)=1125-(1000-3) = (998+2)+(1246-2) =(431532)+(3.2+6.8 )=1252-252172=400(125*8)=25*8*37 =1125-1000+3 =1000+1244 =10+10=20 =10-172=875 =4001000=52 =200*37=7400 =125+3=128 =2244 (4161) 12 143215474 34(23413) 1258.8 4.354.25 3.65 3.75 3.4993.4 =(246244)*12 =47215474 =342343413 =125*(8+0.8) = (4.35+3.65 )+(4.25+3.75 )=3.4* (99+1)=242*12 =(4774)*2154 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340 =1 =1*2154=2154 =81 =1000+100=1100 17.15 8.47 1.53 17653434659725111592 0.1250.25 32 22.32.45 5.3 4.55 =17.15- (8.47+1.53 ) =1765465343 =9751111592 =81*41*32 =22.3-5.3-(2.45+4.55 )2 =17.15-10 =13-343=941 =97*11511592 =1 =17-7=10 =7.15 =(9792)115=115(1211187+245)72 4.25365(261143) 187.711187.7 43872157.125210.5 3415(5731434)=12117218772+24572 =441+143- (365+261) =187.7*(11-1 ) =43872157812121 =3415(57314*34)=11*6+7*4+5*3 =6-6=0 =1887 =21(43875781-1) =1549*(5772)=66+28+15 =21*100=50 =1549*73=57=109 2.4243+4.58311432126.62.563511786131234.6+325+635+5.4 2.8+549+7.2+359445(245+512) =2.42*34+4.5834-34*1 =221*653221*653 =1178( 613+123)=453+352+653+552 =(2.8+7.2 )+594+395=445245-512=34(2.42+4.58-1 ) =221*2*653 =11788=387 =453+552+(352+653)=10+9=19 =2-512=1127=34*6=8 =10+10=20 438+2.25+558+734725+457+23553611 1647+16511237+359337+149+1470.75+58+14+0.375 5-21417-1317=483+241+585+743 =725+235+457=53611+165111647=237+147337+(359+149) =43+85+41+83 =5-( 21417+1317)3 =483+585+(241+743)=10+457=70-1647=74+5=574 =43+41+(85+83)=2 =5-4=1=10+10=20 =1475 =537345945+9945+99945+99994548.3-1516-4569564.25+4146 0.6250.5+58+1262.5% 31387251331381645+(247-1.8) =(1+9+99+999+9999 )45= 48.3-(1516+456)=965*441+441*61 =85*21+85*21*85 =3138313872513=1645+(247-154) =11107 45=48103-20=28103 = (965+61)*441 =85*(21+21+1) =172513=72513=1645-154+247=10*417=285 =1554+247=1835132.5(910+910+910+910) 2234+2575%-7 0.75 0.25 63.514131267152.5-2124715389+3.125+119+1781125-996=221*4*109 =22*43+25*43-7*43 =41*6321-41*1321 =6157*221-221*4157 =389+119+( 381+178)=1125-(1000-4)=25*4*109=10*109=9 =(22+25+7)*43=271 =41*(6321-1321) =(6157-4157)*221 =5+5=10 =1125-1000+4 =41*50=1221 =2*25=5 =125+4=129(111+999) 56(37-38) 49.51035-(50-12)0.6 71141419+5519 147+71145(79+4150.6) 8973837.5%+104 0.375 =110+(1+999)/(5637-5638) =4921*1035-491253 =71141419+5519*711+711=45* (97+154-53) =8978383+104834 =(110+1000)( 24-21)=4921(1053-53) =711(41419+5519+1)=45*97+45*154-45*53 = (897-1+104)83=1110*31 =4921*10=495 =711*11=7 =35+12-27=20 =(896+104)83=100083=375314 (5385.375) 3.5114+1.252710+3.84572156-5672 2532125 70999+709 299101=413* (583-583) =321*141+141*2107+354*45=72*(156-56)=25*(8*4)*125 =709(99+1)=0 =(321+2107+354)*45=72*100 =25*8* (4*125)=709*100 =(27+2107+519)*45=7200 =200*500=100000 =70900 =(1035+2107+1038)*45563999 7199 3755+2996 8439+1001 446+295 888+999 210020 2126.6+2.563575.399+75.3 4.63.7+540.37 0.12534+188.25+12.5% 8.37-3.25-(1.37+1.75) =221*653+221*653 =75.3*(99+1) =4.6*3.7+5.4*3.7 =81*43+81*841+81 =8.37-1.37-(3.25+1.75 )5 =221(653+653) =75.3*100 =(4.6+5.4 )*3.7 =81(43+41+1) =7-5=2=221*1256 =7530 =10*3.7 =81*2=41=25*566=33 =371178613123153144.2553419.826.573.43 4.6+325+635+5.4 438+2.25+558+7349.632.54 60.25 =1187- (631+132)=15143- (441+543)=19.82- (6.57+3.43 )=4.6+5.4+ (352+653)=483+585+(241+743)=9.63/ (2.5*4 ) =6/41=1187-8 =387 =15143-10=5143 =19.82-10=9.82 =10+10=20 =10+10=20 =9.63/10=0.963 =6*4=24 37125125738+5857815516+52710918(49+56)237+235 (16112)( 2445)=3-(127+125)=75(83+85) =31*21+275*109 =18*94+18*65 =32*(7+5) =121*24-121*54=3-1=2 =75 =31*21+31*21 =2*4+3*5 =32*12 =2-151=11514=61+61=31 =8+15=23 =2*4=8(5747+47)4715(23+15)113 237+235 18 12(35109) (215311)1511 12103450075 =(75+1)*74*47 =51/ (392+651) =32(7+5) =81* (21*23)=152*165+113*1656 =175 =51*239+51*65 =2*4=8 =81*43=323 =2*11+3*15=1039+13=16109 =22+45=67(32 4117)125(2543)41412518169257169169(21737421)41(99109)9 546585=(8+17)*512=25*4+43*4+41 =(2518+257+1)169 =21(73+74)*41 =99*91+109*91 =54*65*58=25*512 =100+3+41 =2*169=89=181 =21*41=541 =11+101=11101 =1516=1151=5*12=60 =103411514(5432)1110 (6554)30 31321655610959411511781 5881 4181=1514/ (54*1110+32*1110) =65*30+54*30 =31+3*2 =1-21 =4-(115+117) =81* (58+41+1)=1514/ (118+3320) =25+24=49 =631 =21 =4-1111=21110 =81*100=1221=1514/3344=1514*43=107547445215465525354 (8521)85 235 - 13518 35153 0.653 (4514)73710=74-21 =32+(52*35) =54/ (81*58) =53* (153-53)7 =141 =32*2=131 =54/51=54*5=4 =53*100=3*20=6010 - 719- 1219+ 11925135231013.098.12 4.88 =10-(197+1912)+191=25*31*25*103 =13.09-(8.12+4.88 )=10-1+191 =425=641 =13.09-13=0.09 =9191
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