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1、三百道简便计算题带答案 1、45+15X6=135 2、2504-5X8=400 3、6X5+2X4=60 4、30X3+8=98 5、4004-4+20X5=200 6、10+124-3+20=34 7、(804-20+80)4-4=21 8、70+(100-10X5)=120 9、3604-40+10=19 10、40X20-200=600 11、(80-25)*2=110 12、70+45=115 13、90X24-3=60 14、16X64-3=32 15、300X64-9=200 16、5404-9X7=420 17、30X204-15=20 18、4004-4X7=700=186
2、81.1.3579+3.5791+5.7913+7.9135+9.1357二(1+3+5+7+9)XI.1111=25X1.1111=27.7775 82.52.5x2.9+5.45=5.25x29+5.25+0.2=5.25 X(29+1)+0.2=5.25X30+0.2=157.5+0.3=157.7 83.0.92x15+0.08x15=(0.92+0.08)X15=1X15=15 84.0.72X1.25X2.5=0.9X(0.8X1.25)X2.5 二 O.9X1X2.5=2.25 85.400.6x7-2003x0.4=200.3x14-200.3x4=200.3X(14-4)=2
3、00.3X10=200356+31+24=(56+24)+31=80+31=111,87、615+475+125=615+(475+125)=615+600=121588、125X64=125X8X8=1000X8=800089、89+101+111=101+(89+111)=101+200=301 90、24+127+476+573=(24+476)+(127+573)=500+700=1200 91、400-273-127=400-(273+127)=400-400=0 92、327+(96-127)=327-127+96=200+96=296 93、70X98=70X(100-2)=70
4、00-140=6860 94、442-103-142=442-142-103=300-103=197 95、999+99+9=1000+100+10-3=1110-3=1107 96、67X5X2=67X(5X2)=67X10=670 97、25X(78X4)=25X4X78=100X78=7800 98、72X125=9X(8X125)=9X1000=9000 99、90004-1254-8=9000+(125X8)=90004-1000=9100、4004-25=4004-100X4=4X4=16101、25X36=25X4X9=100X9 二 900102、103X27 二(100+3)
5、X27=2700+81=2781103、76X102=76X(100+2)=7600+152 二 7752104、3600+25+4=3600+(25X4)=36004-100 二 36105、99X35=(100-1)X35=3500-35 二 3465106、(25+12)X4=25X4+12X4=100+48=148107、56X27+27X44=(56+44)X27=100X27=2700108、56X99+56=56X(99+1)=56X100=5600 109、125X25X8X4=125X8X(25X4)=1000X100=100000 120、25X32X125=(25X4)X
6、(8X125)=100X1000=100000121、16X77+16X23=16X(77+23)=16X100=1600122.28X30+30X22=30X(28+22)=30X50=1500123.32X27+18X27=27X(32+18)=27X50=1350125X64=125X8X8=1000X8=800076X101=76X(100+1)=76X100+76X1=7600+76=7676695-134+105-166=(695+105)-(134+166)=800-300=500158+262+138=158+(262+138)(加法的结合律)=158+400 二 558375
7、+219+381+225 二(375+225)+(219+381)(加法的交换律和结合律)=600+600=12005001-247-1021-232=(5000+1)-(247+1021+232)(减法的运算性质)=5000+1-1500=5000-1500+1=3501(181+2564)+2719=(181+2719)+2564(加法的交换律和结合律)=2900+2564=54641378+44+114+242+222=(1378+222)+(44+114+242)(加法的交换律和结合律)=1600+400=2000132.99+999+9999+99999=(100-1)+(1000-
8、1)+(10000-1)+(100000-1)=100+1000+10000+100000-1-1-1-1=111100-4=111096 133.12X25=3x4x25=3x(4x25)=3x100=300 134.eoxi/iMixi/iviwxiA-M 135.wusxn q 136.nxusxss-IX8X1MX1S-(4X)X(BXUS)19、(350-80)4-9=30 20、160+70+50=28018-644-8=10 21、424-6+20=2723、40-5 X 7=5 24、80+604-3=10025、41+184-2=50 26、75-11X5=2042+7-29
9、=20 27、56004-80=7029、25X164-4=100 30、120X254-5=60031、36X114-3=132 32、102525X8=328336+70-6=400 34、25X9X4=90035、200-33 X 3=101 36、3020-1010=201037、12X50+10=610 137.-(MNHiNIHWNHlMB)-MNHJMNmMrahMMMBF-MB 138.m+3-+3 139.a ix4i，x&w-ix sxa oBxie&sxtt8XKn-Lisxa,3XLe-4L9XaX8.TV-l.SBXLe)Ml SX(4xa 8XS.VS-L X4X0
10、L。-a.sx xa 4xixs.TO-L X4X.。-a,xia-nrtAeH&ax4xa4x(7.9-LM)-a W4X&1QHX3XUX&S)140.LMB*1，2，-tu-ais-IB 141.-vanvs-tn 加-M.TB 142.8XS-l+8Rm-X4/T*1-KSQ-XVT-H5 M3,smx(m-m)Hoo-tmxT+m-1MNH-W-ti 144.3K(tt-CMB.4-W.8S)+&5 30SF.，-93.0B-n.tt-10MS.a+i-D+&i-(1-1)Ml MH&11aBi+XI-l&l+LTXl7.29X4.6+46X1.271=7.29X4.6+4.6X12
11、.71=(7.29+12.71)X4.6=20X4.6=92；(28.7-18.64-3.1)X0.8=(28.7-6)X0.8=22.7X0.8=18.16；16-5.32-4.68=16-(5.32+4.68)=16-10=6；146.40.8+14.7+(14.6-12.5)=40.8+14.74-2.1=40.8+7=47.8；0.72+9.64-3.2=0.72+3=3.72.147.3.7X4.5-4.4X3.7=3.7X(4.5-4.4)=3.7X0.1=0.37；0.25X0.25X4=0.25X(0.25X4)=0.25X1=0.25；148.3.84-1.9+0.16-1.
12、1=(3.84+0.16)-(1.9+1,1)=4-3=1；9-74-2.5X0.4=9-2.8X0.4=9-L 12=7.88；(5)5.5X 0.672+(2+2.2)=5.5X 0.672+4.2=5.5X0.16=0.88.149.28.74-7X4.5=4.1X4.5=18.459.64-(15.4-12.2)=9.64-3.2=3 150.4.6X1.2+2,8X4.6=4.6X(1.2+2.8)=4.6X4=18.4934-3.1-0.3=30+0.3=100 151.(4.15+0.65)X0.9=4.8X0.9=4.32；9.06X14.7+5.3X9.06=9.06X(14
13、.7+5.3)=9.06X20=181.2；152.(2.3+1.054-2.1)X2.5=(2.3+0.5)X2.5=2.8X2.5=7；9.184-(5.9-2.3)X0.25=9.18+3.6X0.25=9.184-0.9=10.2.153.12.5X0.5X8=12.5X8X0.5=100X0.5=50；17.54-(5.7-3.2)=17.54-2.5=7；154.48.77-32,764-8.4=48.77-3.9=44,87；10.254-2.54-0.4=10.25+(2.5X0.4)=10.254-1=10.25；155.18.1-2.8X4.6=18.1-12.88=5.2
14、2；3.01X101-30.1X0.1=3.01X(101-1)=30.1X 100=30100.156.1.14-(22+5)=1.1+22X5=0.05X5=0.25254-40X0.4=25X 0.44-40=104-40=0.25 157.72+0.94-0.125=72+7.2=79.217.374-0.45-3.864-0.1=38.6-38.6=0 158.9.07-22.784-3.4+3.7=9.07-6.7+3.7=2.37+3.7=6.0710.01X101-10.01=10.01X(101-1)=10.01X100=1001 159.0.11X1.8+8.2X0.11=
15、0.11X(1.8+8.2)=0.11X10=1.126X20.2-8.4-L 8=525.2-8.4+1.8)=525.2-10.2=515 160.12.054-1.254-0.8=12.054-(1.25X0.8)=12.054-1=12.056.5X99=6.5X(100-1)=6.5X100-6.5=650-6.5=643.5 161.4.65-2.55-1.45=4.65-(2.55+1.45)=4.65-4=0.652.2X0.25+2.8X0.25=(2.2+2.8)X0.25=5X0.25=1.25 162.0.25X6.82X4=(0.25X4)X6.82=1X6.82=6
16、.82102X4.5=(100+2)X4.5=100X4.5+2X4.5=450+9=459 163.8X(20-1.25)=8X20-8X1.25=160-10=1508.3+8.3X99=8.3X(1+99)=8.3X100=830 164.(1.25+12.5+125 X 8=1.25 X 8+12.5 X 8+125 X 8=10+100+1000=110+1000=1110 165.2.64+8.67+7.36+11.33=(2.64+7.36)+(8.67+11.33)=10+20=302.74X9.5+0.5X2.7=26.03+1.35=27.38(2400-480X2.5)4
17、-1.6=(2400-1200)4-1.6=12004-1.6=750 166.16.8X10.1=16.8 X(10+0.1)=16.8 X10+16.8X0.1=168+1.68=169.681.25X88=1.25 X(80+8)=1.25X80+1.25X8=100+10=1106.87X 404-(3.49-3.09)=6.87X 404-0.4=6.87X100=687 167.4.054-0.9+5.5=4.5+5.5=10(2)3.67X10.1-3.67X0.1=3.67 X(10.1-0.1)=3.67X10=36.7(3)99X0.73+0.73=(99+1)X0.73=
18、100X0.73=733.3+6.7X3.5=3.3+23.45=26.75 168.3.74-2.54-0.4=3.74-(2.5X0.4)=3.74-1=3.70.25X 1.25X32=0.25X 1.25X(4X8)=(0.25X4)X(1.25X8)=1X10=109.83X1.5+0.617X 15=9.83X 1.5+6.17X1.5=1.5X(9.83+6.17)=1.5X16=2412.13+7.5-12.13=12.13-12.13+7.5=0+7.5=7.5 169.7.69-(3.7+2.69)=7.69-3.7-2.69=7.69-2.69-3.7=5-3.7=1.3
19、7.8X1.01=7.8X(1+0.01)=7.8X1+7.8X0.01=7.8+0.078=7.8789.4X3.2+6X0.32=9.4X3.2+0.6X3.2=3.2X(9.4+0.6)=3.2X10=3212.5X3.2=12.5X(8X0.4)=12.5X8X0.4=100X0.4=40 170.13.84-(1.38X2)=13.84-1.384-2=104-2=5 15.171.432.54-254-0.4=432.54-(25X0.4)=432.54-10=43.251.25X3.2X2.5=1.25X(8X0.4)X2.5=(1.25X8)X(0.4X2.5)=10X1=10
20、0.81X99+0.81=0.81X(99+1)=0.81X100=81 172.5.9X 10.1=5.9X(10+0.1)=5.9X 10+5.9X0.1=59+0.59=59.59100-52.8-47.2=100-(52.8+47.2)=100-100=0 173.(4-0.4)X0.25=4X0.25-0.4X0.25=1-0.1=0.90.75X184-0.15=0.754-0.15X18=5X18=90；174.9.3+0 125+8=9.3+(0.125X8)=9.3+1=9 3；1.78X99+1.78=1.78X(99+1)=1.78X100=178；175.4.7X4.2
21、8+5.3X4.28=(4.7+5.3)X4.28=10X4.28=42.8；2.3X10.2=2.3X(10+0.2)=2,3X10+2.3X 0.2=23+0.46=23.46；21.364-0.2-25.9=106.8-25.9=80.9.176.28.4X99+28.4=28.4 X(99+1)=28.4X100=28403.6X201=3.6 X(200+1)=3.6X200+3.6 X 1=720+3.6=723.6 177.0.94X2.5-0.45=2.35-0.45=1.94X0.8X12.5X2.5=(4X2.5)X(0.8X12.5)=10X10=100 178.17.5
22、4-0.25X17+13=70X17+13=1190+13=120315.584-8.2-0.72=1.9-0.72=1.18 179.1.25X2.5X0.8X 43=1.25X0.8X2.5X 43=1 X2.5X 43=107.5；104-0.24-2.5=104-(0.2X2.5)=104-0.5=20；180.8.44-0.21+0 5=40+0.5=80；64X4.5+3.6X45=64X4.5+36X4.5=(64+36)X4.5=100X4.5=450；181.1.25X3.2X 0.8=1.25X0.8X3.2=1 X 3.2=3.2；14.5X102=14.5X(100+2
23、)=14.5X100+14.5X2=1450+29=1479.182.0.34X101=0.34X(100+1)=0.34X100+0.34X 1=34+0.34=34.34；8.8X1.25=(1.1X8)XI.25=1.IX(8X1.25)=1.1X10=11；(3)2.94X6.3+3.7X2.94=2.94X(6.3+3.7)=2.94X10=29.4；21.9-9.28-10.72=21.9-(9.28+10,72)=21.9-20=1.9；183.2.7+(11.2-2.7)X 0.4=2.7+8.5X0.4=2.7+3.4=6.1；1.5X 0.02+(2.1-2.09)=1.5
24、X 0.024-0.01=1.5X2=3.184.10.7-22.784-3.4=10.7-6.7=45.5X17.3+6.7X5.5=5.5X(17.3+6.7)=5.5X24=132 185.3.764-0.44-2.5=3.764-(0.4X2.5)=3.764-1=3.760.25 X 12.5 X 3.2=0.25 X12.5 X(4X0.8)=(0.25X4)X(12.5X0.8)=1X10=104.6X25=(4+0.6)X25=4X25+0.6X25=100+15=115；186.3.754-12.54-0.8=3.754-(12.54-0.8)=3.754-10=0.375；
25、2.5+7.54-4=2.5+1.875=4.375；187.(3.2-1.4)4-0.18-1.8=1.84-0.18-1.8=10-1.8=8.2；0.75X0.5X0.8=0.75X(0.5X0.8)=0.75X0.4=0.3；188.5.6X15.7+9.3X5.6=5.6 X(15.7+9.3)=5.6X25=14X0.4X25=14 X(0.4X25)=14X10=140；(3)50.4X1.9-1.8=95.76-1.8=93.96.189.2.4-0.2+5X60=2.4-0.04X60=2.4-2.4=00.25X6.8X40=(0.25X40)X 6.8=10X6.8=68
26、5.52-0.55-0.45=5.52-(0.55+0.45)=5.52-1=4.5213.73+6.274-0.3=13.73+20.9=34.63；190.18+0.4+2.5=18+(0.4X2.5)=184-1=18；0.75X99+0.75=0.75X(99+1)=0.75X100=75；191.2.85 X 5.35+2.85 X4.65=2.85X(5.35+4.65)=2.85X10=28.5；1.5X0.44-1.5X0.4=1.54-1.5X0.4X0.4=1X0.4X0.4=0.4X0.4=0.16.192.28.4X99+28.4=28.4 X(99+1)=28.4X1
27、00=2840；3.6X201=3.6X(200+1)=3.6X200+3,6X 1=720+3.6=723.6；193.0.94X2.5-0.45=2.35-0.45=1.9；4X0.8X12.5X2.5=(4X2.5)X(0.8X12.5)=10X10=100；194.17.54-0.25X17+13=70X17+13=1190+13=1203；1.25X8.08=1.25 X(8+0.08)=1.25X8+1.25X0.08=10+0.1=10.1.195.3.64-E12X(0.53-0.45)3.64-124-(0.53-0.45)=0.34-0.08=3.75125X32X2.5=
28、125 X(4X8)X2.5=(125X8)X(4X2.5)=1000X10=10000；2.6X(3.4+1.6)=2.6X5=13；196.6.7X5.5+5.5X3.3=(6.7+3.3)X5.5=10X5.5=55；36X99=36X(100-1)=36X 100-36X 1=3600-36=3564；197.9.07-2.2-7.8=9.07-(2.2+7.8)=9.07-10=-0.93；17.64-44-2.5=17.64-(4X2.5)=17.64-10=1.76.198.2.5X0.27X4=2.5X4X0.27=10X0.27=2.7；0.63X101=0.36X(100+
29、1)=0.36X100+0.36X 1=36+0.36=36.36；199.0.78+0.224-5=0.78+0.044=0.824；3.7X12.5+4.3X12.5=(3.7+4.3)X12.5=8 X12.5=100；(0.36+5.4)+0.6=5.764-0.6=9.6；200.4.5+0.25+16=45+(0.25X1.6)=4.54-0.4=11.25.201.1.6X(2.25+10.54-1.5)=1.6X(2.25+7)=1.6X9.25=14.8；74X 57+43X 74=74X(57+43)=74X100=7400；202.0.64-E(6.1-4.6)X0.8=
30、0.64-L 5X0.8=0.6-r 1.2=0.5；101X92-92=(101-1)X92=100X92=9200；203.125 X 64=125 X8X 8=1000 X 8=8000；46.2X0.56+5.37X5.6+1X0.056=4.62X5.6+5.37X5.6+0.01X5.6=(4.62+5.37+0.01)X5.6=10X5.6=56.204.1.5X102=1.5X(100+2)=1.5X100+1.5X2=150+3=1531.25X213X0.8=1.25X0.8X213=1X213=213 205.72X081+104=58 32+10.4=68 72L 25
31、X5.6=1.25X(8X0.7)=1.25X8X0.7=10X0.7=76.054-0.5+10.75=12.1+10.75=22.85(6)29.64-0.8-1.2X5=37-6=31 206.2.69X99+2.69=2.69 X(99+1)=2.69X100=2691.25X2.3X 0.8=1.25X0.8X2,3=1 X 2.3=2.3 207.3.17X5.6+4.4X3.17=3.17X(5.6+4.4)=3.17X10=31.7(4)38+0.25+0.4=38+(0.25X0.4)=384-0.1=3800.2254-0.25X4=0.9X4=3.6 208.17.54+
32、28.35+3.46+1.55=17.54+3.46+(28.35+1.55)=21+29.9=50.97.2X2.7454-0.36=7.24-0.36X2.745=20X2.745=54.9 209.3.85 X 5.6+5.4X3.85-3.85=3.85 X(5.6+5.4-1)=3.85 X 10=38.5(3.2+0.128)4-0.8=3.24-0.8+0.1284-0.8=4+0.16=4.16 210.(13.3-8.8)X3.24-0.36=4.5X3.24-0.36=14.4+0.36=400.75X4X0.25X4=(0.75X4)X(0.25X4)=3X 1=3 21
33、1.6.3X 10.1=6.3X(10+0.1)=6.3X 10+6.3X0.1=63+0.63=63.6315.584-8.2-0.72=1.9-0.72=1.18 4 536+0.84-14=5.674-14=0.4057.5X2+1.254-0.5=15+2.5=17.5；212.98X7.5=(100-2)X7.5=100X7.5-2X7.5=750-15=735；804-0.25+0.75=320+0.75=320.75；213.19X3.8+3.8=(19+1)X3.8=20X3.8=76；1.25X3.4X 0.8=1.25X0.8X3.4=1 X 3.4=3.4；214.5.1
34、24-0.44-2.5=5.124-(0.4X2.5)=5.124-1=5.12.215.55.04+12.8-3.3=67.84-3.3=64,54；0.25X32X0.125=0.25X(4X8)X0.125=(0.25X4)X(8X0.125)=1X1=1；7.8X75+75X0.2=(7.8+0.2)X 75=8X75=600.216.0.21X144-0.5=2.944-0.5=5.88；0.25X13X4=0.25X4X13=1X 13=13；217.1.25X9.7-1.25X 1.7=1.25X(9.7-1.7)=1.25 X8=10；(4)16.54-E(5.2+4.8)XI
35、.5=16.54-10X1.51=16.54-15=1.1；(8.92-0.45)4-(2.5+4.5)=8.474-7=1.21.38、25X8+199=399 39、23X11-13=240 40、1254-25-5=0 41、4200-2200+200=2200 42、220+80-150=150 43、20X8X5=800 44、600-3 X 200=0 45、56+31+24=111 46、615+475+125=1215 47、125X64=8000 48、89+101+111=301 49、24+127+476+573=1200 50、25X32X125=100000 51、5
36、6+31+24=(56+24)+31=80+31=111 52、615+475+125=615+(475+125)=615+600=1215 53、125X64=125X8X8=1000X8=8000 54、89+101+111=101+(89+111)=101+200=301 55、24+127+476+573=(24+476)+(127+573)=500+700=1200 56、400-273-127=400-(273+127)=400-400=0 57、327+(96-127)=327-127+96=200+96=296 58、70X98=70X(100-2)=7000-140=6860
37、 59、442-103-142=442-142-103=300-103=197 60、999+99+9=1000+100+10-3=1110-3=1107 61、67X5X2=67X(5X2)=67X10=670 62、25X(78X4)=25X4X78=100X78=7800 63、72X125=9X(8X125)=9X1000=9000 64、90004-1254-8=90004-(125X8)=90004-1000 二 9 65、4004-25=4004-100X4=4X4=16 66、25X36=25X4X9=100X9 二 900 67、103X27 二(100+3)X27=2700
38、+81=2781 68、76X102=76X(100+2)=7600+152 二 7752 69、3600+25+4=36004-(25X4)=36004-100=36 70、99X35=(100-1)X35=3500-35=3465 71、(25+12)X4=25X4+12X4=100+48=148 72、56X27+27X44=(56+44)X27=100X27=2700 73、56X99+56=56X(99+1)=56X100=5600 74、125X25X8X4=125X8X(25X4)=1000X100=100000 75、25X32X125=(25X4)X(8X125)=100X1000=100000 76.2.64XL7-2.64X0.7=2.64 X(L7-0.7)=2.64X1=2.64 1.31.5X1.07-3.15X0.7=3.15X10.7-3.15X0.7=3.15 X(10.7-0.7)=3.15X10=31.5 78.2.7X5.7-2.7+5.3X2.7=2.7X(5.7-1+5.3)=2.7X10=27 79.0.6254-0.125X0.8 二(0.625X0.8)X84-(0.128X8)=0.5X84-1=4 80.18.6X6.1+3.9X18.6=18.6X(6.1+3.9)=18.6X10