初一100道数学计算题及答案.pdf
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1、-1.25(8+10)=1.258+1.258.3+8.31.76=8.3(1.24+1.76)=8.33=24.999991001=9999(1000+1)=99991000+99991=1000899914.86.58.33.7=(14.8-6.5)6.38.33.7=8.36.3+8.3(6.33.7)=8.310=831.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78933-157-43=933-(157+43)=933-200=7334821-998=4821-1000+2=3823I3212525=4812525=(425)(8125)=10
2、01000=1000009048268=(2600+2600+2600+1248)26=2600 26+2600 26+2600 26+1248269=100+100+100+48=3482881 43=(1290+1591)434=129043+159143=30+373.242.3 0.42316=3.242.3 42.31.6=42.3(3.2 1.6)=42.3(40.8 40.4)=42.3(40.4240.4)=42.3(4*0.4*7.5-1.25*4*0.4)=42.340.4(7.5-1.25)=42.340.46.25=42.3(42.5)=42371.8+188+3.58
3、-47=52+28-47=80-47(80-9.8)5分之 2-1.32=70.2*2/5-1.32=28.08-1.32=26.7687 分之 41(3.2-2.95)=84/710.25=84/74=8/72700(506499)900=27007900=18900900=2133.02(148.490.85)2.5=33.0257.552.5=33.0223.02=10(111)5.1=(11)5.1=05.1=018.1(30.2990.23)1=18.11.71=18.11.7=19.8-18+29+-52+60=19-3+-2+-1+0+1+2=-3-301+125+301+-75
4、=50-1+-1/2+3/4+-1/4=-1-7/2+5/6+-0.5+4/5+19/6=1.25-26.54+-6.14+18.54+6.14=-81.125+-17/5+-1/8+-0.6=-3-98+76+(-87)*2356+(-75)-(7)-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)1/2+3+5/6-7/122/3-4-1/4*(-0.4)/1/3+222+(-4)+(-2)+4*3-2*8-8*1/2+8/1/8(2/3+1/2)/(-1/12)*(-12)(-28)/(-6+4)+(-1
5、)2/(-2)+0/7-(-8)*(-2)(1/4-5/6+1/3+2/3)/1/218-6/(-3)*(-2)(5+3/8*8/30/(-2)-3(-84)/2*(-3)/(-6)1/2*(-4/15)/2/3-3*+2y-5*-7y14372727563 75-(12+18)152160(83-79)18 28084024532513(266250)85(95144024)58870(105202)1437272756381432(135278)37.85-(7.85+6.4)30156(17.7-7.2)3(947599)766436(91327623)192(5438)67(7.1-5
6、.6)0.9-1.152.5 81432(135278)5.42.6(3.7-2.9)+0.62(947599)7664 60(9.528.9)0.18 2.8810.430.243.5 20(2.441.8)0.40.15 28-(3.4 1.252.4)0.815.5-(3.215.79)(31.8 3.24)5 19464.81.80.9 36.724.259.9 3.416(0.01635)0.8(106.76)1.2(136+64)(65-3450.55)4.80.124.8(58+37)(64-95)812-700(9+3111)(3.21.5+2.5)1.685+14(14+20
7、826)120-36418+35(284+16)(512-820818)9.7274/71/3(3/5-3/10)(4/5+1/4)7/3+7/1012.780(13.4156.6)37.812-700(9+3111)(136+64)(65-34523)3.2(1.5+2.5)1.685+14(14+20826)(58+37)(64-90.55)8.5(284+16)(512-820818)0.12 4.80.124.8(3.21.5+2.5)1.6120-364(3.87-0.13)+4.23.74 347+452-41605232.52-(6+9.7283.2)2.5 87(58+37)(
8、64-95)(7.1-5.6)0.9-1.15 2.5(3.21.5+2.5)2.6(3.7-2.9)+0.62 126(12-7.2)-63.26+(1.5+2.5)1.6(3.2 1.5+2.5)(3.87-0.13)+4.2 3.7433.02 (148.4 90.85)2.51)23+(-73)(2)(-84)+(-49)(3)7+(-2.04)(4)4.23+(-7.57)(5)(-7/3)+(-7/6)(6)9/4+(-3/2)(7)3.75+(2.25)+5/4(8)-3.75+(+5/4)+(-1.5)(9)(-17/4)+(-10/3)+(+13/3)+(11/3)(10)(
9、-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)(11)(+1.3)-(+17/7)(12)(-2)-(+2/3)(13)|(-7.2)-(-6.3)+(1.1)|(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)(15)(-2/199)*(-7/6-3/2+8/3)(16)4a)*(-3b)*(5c)*1/61.3/7 49/9-4/32.8/9 15/36+1/273.12 5/6 2/9 34.8 5/4+1/45.6 3/8 3/8 66.4/7 5/9+3/7 5/97.5/2-(3/2+4/5)8.7/8+(1/8+1/9)9.9 5
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