第八类：乘除
960×46÷48 99000÷121×11 3702×38÷1234 =960÷48×46 =99000÷(121÷11) =1234×3×38÷1234 =920 =9000 =114 640÷（16÷4） 1000÷（125÷4） =640÷16×4 =1000÷125×4 =160 =32 第九类：加减乘除
（98+147）÷49 （230-23）÷23 （250-25）÷25 =98÷49+147÷49 =230÷23-23÷23 =250÷25-25÷25 =5 =9 =9
1736÷28+1064÷28 125×（860+240÷12） 700+612÷12×4 =(1736+1064) ÷28 =125×880 =700+612÷3÷4×4 =100 =125×8×110 =700+204 =110000 =904
（37+15）×85+1360 2005×20062006-2006×20052005 =50×85+2×85+1360 =2005×2006×10001-2006×2005×10001 =4250+170+1360 =0 =5610+170=5780
42×125×8×5 25×4×88×125 =125×8×(42×5) =100×11×(8×125) =210000 =1100000
（12+50）×40 125×（40-4） 86×103 =12×40+50×40 =125×40-125×4 =86×(100+3) =680 =4500 =86×100+86×3
=8858
18×125 25×44 42×25 =(10+8) ×125 =25×4×11 =2×25×21 =125×10+125×8 =1100 =1050 =2250
99×9 99×78 45×38+38×55 =(100-1) ×9 =(100-1) ×78 =(45+55) ×38 =100×9-9 =78×100-78 =3800 =91 =7722
28×21+28×79 37×23-23×7 38×46+64×38 =(21+79) ×79 =(37-7) ×23 =(46+64) ×38 =7900 =690 =3800
99×32+32 46+46×59 167×2+167×3+167×5 =(99+1) ×32 =(59+1) ×59 =(2+3+5) ×167 =3200 =3540 =1670
39×8+6×39-39×4 28×225-2×225-6×225 =(8+6-4) ×39 =(28-2-6) ×225 =390 =2500
（42+25）×125+（18+15）×125 65+73+135 357+288+143
=[(42+18)+(25+15)] ×125 =65+135+73 =357+143+288 =12500 =273 =788
272+68+28 129+235+171+165 17+145+23+35 =272+28+68 =129+171+(235+165) =17+23+(145+35) =368 =700 =220
400-256-44 517-53-47 284-159-41 258-42-16 =400-(256+44) =517-(53+47) =284-(159+41) =100 =417 =84
545-167-145 478-47-178 344-（144+37） =545-145-167 =478-178-47 =344-144-37 =233 =253 =163
236-（177+36） 45×4×5 23 ×5×2 =236-36-177 =45×(4×5) =23×(5×2) =23 =90 =230
25×9×4 8×（125×13） （250×125）×（4×8） =25×4×9 =8×125×13 =250×4×(125×8) =900 =13000 =1000000 88×125 72×125 125×64×25 =11×(8×125) =9×(8×125) =125×8×(8×25) =11000 =9000 =100000
42×125×8×5 25×4×88×125 （12+50）×40 =42×5×(8×125) =100×11×(8×125) =12×40+50×40 =210000 =1100000 =2480
125×（40-4） 76×103 18×125 =125×40-125×4 =76×(100+3) =(10+8) ×125 =4500 =76×100+3×76 =10×125+8×125 =7828 =2250 25×44 42×25 99×9 99×78 =25×(40+4) =(40+2) ×25 =(100-1) ×9 =(100-1) ×78 =25×40+25×4 =40×25+2×25 =9×100-9 =7800-78 =1100 =1050 =891 =7722 45×37+37×55 28×21+28×79 17×23-23×7 =(45+55) ×37 =(21+79) ×79 =(17-7) ×23 =3700 =7900 =230 38×46+64×38 99×32+32 46+46×59 =(46+64) ×38 =(99+1) ×32 =(59+1) ×46 =110×38 =3200 =2760 =(10+100) ×38 =38×10+38×100 =4180 167×2+167×3+167×5 39×8+6×39-39×4 360÷4÷9 =(2+3+5) ×167 =(8+6-4) ×39 =360÷(4×9) =1670 =390 =10 250÷5÷2 600÷12÷5 800÷5÷8 480÷5÷48
=250÷(5×2) =600÷(12×5) =800÷8÷5 =480÷48÷5 =25 =10 =20 =2
240÷5÷12 420÷35 117+392+608 88×27＋27×12 =240÷12÷5 =420÷7÷5 =117+(392+608) =(88+12) ×27 =4 =12 =1117 =2700
87×53＋87×47 7×75－7×25 234―66―34 =(53+47) ×87 =(75-25) ×7 =234-34-66 =8700 =350 =134
528―53―47 435－（135＋189） 167×25＋32×25＋25 =528-(53+47) =435-135-189 =(167+32+1) ×25 =428 =111 =5000
38×99＋38 147＋147×99 25×（4＋8） =(99+1) ×38 =(99+1) ×147 =25×4+8×25 =3800 =14700 =300
108×75 35×201 75×98 =(100+8) ×75 =35×(200+1) =75×(100-2) =8100 =7035 =7350
25×7×4 2×125×8×6 25×32×125 =25×4×7 =2×6×(125×8) =25×4×(8×125) =700 =12000 =100000
125×88 25×48 3500÷4÷25 =25×8×11 =25×8×6 =3500÷(4×25) =11000 =600 =35 420÷35÷2 30＋255＋70 282＋41＋159 =420÷(35×2) =30+70+255 =282+(41+159) =60 =355 =482
88×27＋27×12 6.3 ÷ 1.8 125×64+125×36 =(88+12) ×27 =6.3÷0.9÷2 =(64+36) ×125 =2700 =3.5 =12500
64×199＋64 528―53―47 158＋395＋105 =64×(199+1) =528-(53+47) =158+(395+105) =12800 =428 =658
4800÷25 （13×8×5×6）÷（4×5×6） 2.1 × 99 ＋ 2.1 =48×100÷25 =13×(8÷4) ×(5÷5) ×(6÷6) =2.1×(99+1) =48×4 =26 =210 =192
0.18 ＋4.26 －0.18 ＋4.26 8100÷4÷75 16800÷120 =4.26+4.26+(0.18-0.18) =（81x100）÷4÷（25x3） =（12000+4800）÷120 =8.52 =81÷3x（100÷4÷25） =140
1248÷24 3150÷15 （10000-1000-100-10）÷10 =1248÷12÷2 =3150÷5÷3 =10000÷10-1000÷10-100÷10-10÷10 =52 =210 =1000-（100+10+1） =889
138＋293＋62＋107 99+999+9999+99999 =138+62+(293+107) =（99+1）+（999+1）+（9999+1）+(99999+1)-4 =500 =111096
66.86－8.66－1.34 8811÷89 10 － 0.432 － 2.568 98×199 =66.88-(8.66+1.34) =(8900-89)÷89 =10-(0.432+2.568) =98×（200-1） =56.88 =99 =7 =19502
25 × 6.8 × 0.04 355+260+140+245 102×99 2×125 =25×0.04×6.8 =355+245+(260+140) =99×(100+2) =2×5×25 =6.8 =1000 =10098 =250
645-180-245 125×32 25×46 =645-245-180 =125×8×4 =25×(40+6) =220 =4000 1150
101×56 99×26 382×101-382 =(100+1) ×56 =(100-1) ×26 =382×(101-1) =5656 =2574 =38200
4×60×50×8 930 ÷ 0.6 ÷5 1022－478－422 =4×50×(60×8) =930÷(0.6×5) =1022-（478+422） =96000 =310 =122
63.4 ÷ 2.5 ÷ 0.4 2357－183－317－357 672－36＋64 =63.4 ÷(2.5×0.4) =2357-357-(183+317) =672-36-36+36+64
=63.4 =1500 =（672-72）+（36+64） =700
36＋64－36＋64 500－257－34－143 755-287+87 =(36-36)+(64+64) =500-(257+34)-143 =755-(287-87) =128 =57 =555
1814－378－422 89×99＋89 3999+498 =1814-(378+422) =(99+1) ×89 =(4000-1)+(500-2) =1014 =8900 =4000+500-1-2 =4497 88×225＋225×12 698－291－9 568－（68＋178） =(88+12) ×225 =698-(291+9) =568-68-178 =22500 =398 =322
382＋165＋35－82 155＋256＋45－98 =382-82+(165+35) =（155+45）+256-(100-2) =500 =200+256-100+2 =358
759-126-259 216+89+11 75×99+2×75 =759-259-126 =216+(89+11) =75×(99+2) =374 =316 =75×100+75×1 =7575
1050÷15÷7 7200÷24÷30 219 ×99 =1050÷（15×7） =7200÷(24×30) =219×(100-1) =10 =10 =219×100-219×1 =21681 58 ×101 76 ×102 78×46+78×54 169×123—23×169 =58×(100+1) =76×(100+2) =(46+54) ×78 =(123-23) ×169 =5858 =7752 =7800 =16900 129×101—129 56×51+56×48+56 125×25×32 24×25 =(101-1) ×129 =(51+48+1) ×56 =125×8×(25×4) =8×25×3 =12900 =5600 =100000 = 300
514+189—214 732—254—332 56×25×4×125 =514-214+189 =732-332-254 =4×25×(8×125) ×7 =489 =146 =700000
24×73+26×24 228+（72+189） 109+（291—176）
=(74+26) ×24 =228+72+189 =109+291-176
=2400 =489 =324 (375+1034)+(966+125) (2130+783+270)+1017
=(375+125)+(1034+966) =2130+270+(783+1017)
四年级下册数学简便计算题
