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1、资料.1.45+15x6=43.20 x8x5=2.250-5x8=44.600-3x200=3.6x52x4=45.20+20十2二 4.30 x3+8=46.35-25-5=5.400-4+20 x5=47.36+8-40=6.10+12-3+20=48.2800-40=7.(80-20+80)-4=49.98-14=8.70+(100-10 x5)=50.96-24=9.360-40=51.56-14=10.40 x20=52.65-13=11.80-25=53.75-15=12.70+45=54.120-24=13.90 x2=55.200斗25=14.16x6=56.800-16=1
2、5.300 x6=57.840-21=16.540-9=58.560-14=17.30 x20=59.390-13=400-4=60.600-15=19.350-80=61.72-24=20.160+70=62.85-17=2118 64-8=63.90-15=22.42-6+20=64.96-16=23.40-5x7=65.78-26=24.80+60-3=66.51-17=25.41+18-2=67.80-40=26.75-11x5=6&100-20=27.42+7 29=69.100-4=2&5600-80=70.240-40=29.25x16=71.920-4=30.120 x25=7
3、2.300-60=31.36x11=73.64-2=资料.32.1025-25=74.64-4=33.336+70=75.50-5=34.25x9x4=76.60-8=35.200-33x3=77.96-4=36.3020-1010=78.90-6=37.12x50=79.400+80=38.25x8=80.400-80=39.23x1仁 81.40 x80=40.125-25=82.400-80=41.4200-2200=83.48-16=42.220+80=84.96-24=85.160 x5=86.4x250=87.0 x518=30.120 x25=8&10 x76=31.36x11=
4、89.36x10=32.1025-25=90.15x6=33.336+70=91.24x3=34.25x9x4=92.5x18=35.200-33x3=93.26x4=36.3020-1010=94.7x15=37.12x50=95.32x30=38.25x8=96.40 x15=39.23x11=97.60 x12=40.125-25=98.23x30=41.4200-2200=99.30 x50=42.220+80=100.5x700=43.20 x8x5=1.45+15x6=44.600-3x200=2.250-5x8=45.20+20+2二 3.6x5 子 2x4 二 46.35-25
5、-5=4.30 x3+8=47.36+8-40=资料.77.96-4=18.400-4=78.90-6=19.350-80=79.400+80=20.160+70=80.400-80=21.18-64-8=81.40 x80=22.42-6+20=82.400-80=23.40-5x7=83.48-16=24.80+60-3=84.96+24=25.41+18-2=85.160 x5=26.75-11x5=86.4x250=27.42+7-29=87.0 x518=28.5600-80=8&10 x76=29.25x16=89.36x10=30.120 x25=90.15x6=31.36x11
6、=91.24x3=32.1025-25=92.5x18=33.336+70=93.26x4=34.25x9x4=94.7x15=35.200-33x3=95.32x30=36.3020-1010=96.40 x15=37.12x50=97.60 x12=38.25x8=98.23x30=39.23x11=99.30 x50=40.125-25=100.5x700=41.4200-2200=42.220+80=1.45+15x6=43.20 x8x5=2.250-5x8=44.600-3x200=3.6x5 十 2x4 二 45.20+20十2二 4.30 x3+8=46.35-25-5=5.4
7、00十4+20 x5二 47.36+8-40=6.10+12-3+20=48.2800-40=资料.7.(80-20+80)-4=8.70+(100-10 x5)=9.360-40=10.40 x20=11.80-25=12.70+45=49.98-14=50.96-24=51.56-14=52.65-13=53.75-15=54.120-24=55.200十25=56.800-16=57.840-21=5&560-14=59.390-13=60.600-15=61.72-24=62.85-17=63.90-15=64.96-16=65.78-26=66.51-17=67.80-40=6&10
8、020=69.100-4=70.240-40=71.920-4=72.300-60=73.64-2=74.64-4=75.50-5=76.60-8=77.96-4=78.90-6=99.30 x50=100.5x700=资料.79.400+80=80.400-80=81.40 x80=82.400-80=83.48-16=84.96-24=85.160 x5=86.4x250=87.0 x518=8&10 x76=89.36x10=90.15x6=91.24x3=92.5x18=93.26x4=94.7x15=95.32x30=96.40 x15=97.60 x12=98.23x30=17x4
9、0=3.5x200二 100-63=1.5-0.06=3.2+1.68=0.75-15=2.8x0.4=0.4x0.8=14-7.4=4x0.25=1.92-0.04=0.36+1.54=0.32x500=1.01x99=0.65+4.35=420-35=10-5.4=25x12=4-20=135-0.5=3/4+1/4=0.4x0.8=资料.4x0.25=0.36+1.54=1.01x99=420-35二 25x12=135-0.5=3/4+1/4=2+4/9=3 2/3 二 3/4-1/2=1/6+1/2-1/6 7.5-(2.5+3.8)=7/8+3/8=3/10+1/5=4/5-7/1
10、0=2-1/6-1/3=0.51-17=32.8+19=5.2-1.3=1.6x0.4=4.9x0.7=1-5=6-12=0.87-0.49=17x40=100-63=3.2+1.68=2.8x0.4=14-7.4=1.92-0.04=3/4+1/4=0.4x0.8=资料.2+4/9=3-2/3=3/4-1/2=1/6+1/2-1/6=7.5(25+38)=7/8+3/8=3/10+1/5=4/5 7/10=2-1/6-1/3=0.51-17=32.8+19=5.2-1.3=1.6x0.4=4.9X0.7 二 1-5=6-12=0.87-0.49=17x40=100-63=3.2+1.68=2
11、.8x0.4=14-7.4=1.92-0.04=0.32x500=0.65+4.35=10-5.4=4-20=3.5x200二 1.5-0.06=0.75-15=0.32x500=0.87 0.49 二 资料.0.65+4.35=10-5.4=4-20=3.5x200二 1.5-0.06=0.75-15=0.4x0.8=4x0.25=0.36+1.54=1.01x99=420-35=25x12=135-0.5=3/4+1/4=2+4/9=3-2/3=3/4-1/2=1/6+1/2-1/6=7.5-(2.5+3.8)=7/8+3/8=3/10+1/5=4/5-7/10=2-1/6-1/3=0.5
12、1-17=32.8+19=5.2-1.3=1.6x0.4=4.9x0.7=1-5=6-12=17x40=100-63=3.2+1.68=2.8x0.4=14-7.4=1.92-0.04=0.32x500=0.65+4.35=10-5.4=4-20=3.5x200=1.5-0.06=0.75-15=0.4x0.8=4x0.25 二 0.36+1.54=1.01x99=420+35=25x12=135-0.5=3/4+1/4=2+4/9=3 2/3 二 3/4-1/2=1/6+1/2-1/6 7.5-(2.5+3.8)=7/8+3/8=3/10+1/5=4/5-7/10=2-1/6-1/3=0.5
13、1-17=3/4-1/2=资料.32.8+19 二 5.2-1.3=1.6x0.4=4.9x0.7=U5=6-12=0.87-0.49=17x40=100-63=3.2+1.68=2.8x0.4=14-7.4=1.92-0.04=0.32x500=0.65+4.35=10-5.4=4-20=3.5x200二 1.5-0.06=0.75-15=0.4M.8 二 4x0.25=0.36+1.54=1.01x99=420-35二 25x12=135-0.5=3/4+1/4=2+4/9=3-2/3=0.51-17=3/4-1/2=资料.1/6+1/2-1/6 7.5-(2.5+3.8)=7/8+3/8
14、=3/10+1/5=4/5-7/10=2-1/6-1/3=0.51-17=32.8+19=5.2-1.3=1.6x0.4=4.9x0.7=1-5=6-12=0.87-0.49=17x40=100-63=3.2+1.68=2.8x0.4=14-7.4=1.92-0.04=0.32x500=0.65+4.35=10-5.4=4-20=3.5x200=1.5-0.06=0.75-15=0.4x0.8=4x0.25=0.36+1.54=资料.1.01x99=420+35二 25x12=135-0.5=3/4+1/4=2+4/9=3-2/3=3/4-1/2=1/6+1/2-1/6=7.5-(2.5+3.
15、8)=7/8+3/8=3/10+1/5=4/5 7/10=2-1/6-1/3=39x4=51x9=77x7=874x3=304x5=106x10=178x3=78x9=1.573x6=3.52x100=3.54x8=43.87x4=163x3=724x7=43.7x8=46.9x8=78x9=250 x0.4=24x5=37x8=104x5=847x4=8x42=5.78x92=78x2=245x0=306x103x0=132x6=350 x1000=317x4=1.52x6=125x0.8=302x783x0=264x8=5.76x9=3875x0=1.854x0 x100=937x4=28
16、5x4=134x3=125x8=25x4=300 x52=5x42=1.35x9=15x8=125x4=8.456x1000=21x8=32x3=资料.48-16=12x8=27x3=56-14=24-8=14x2=83-45=560-80=96-24=40-20=40 x30=37+26=76-39=605+59=30 x23=12x8=27+32=48+27=4500 x20=73+15=120 x600=200 x360=6800 x400=280+270二 4x2500=6000-40=5x1280=4.3+2.7=0.75+0.25 4-0.26=32x0.1=572x8=372x0
17、=153x46=173x10=15x80=3 652007x0=384-4=888-74=592-37=384-32=1846-10=468-39=1460-20=50-2=78-4=24.5-14=49.5-3=153-0=462-5=374-10=73-9=10-3=27x3=90-15=48-4=640-16=39-3=24x20=0.35+2.7=7.2-3.8=资料.4.6-1.9=0.07+0.6=0.83-0.3=1.39-0.39=3+0.05=10-5.4=47+23二 4.5x2=6.9-2.5=7.2x0.8=6x3.4=0.62-0.32=1.4x0.5=0.75x10
18、0=0.02x0.5=3.6-0.3=6.3-7=5.6-100=0.75-0.25=0.125x8=4.20.3二 0.96-2=0.56-28=0.36-0.4=0.64-0.8=0.72-3.6=3.6-24=0.8x1.1=7.2+12.8=46.7-3.8=12.8-4=5.2-13=12.5-5=1.64-41=10-20=24-15=&65x10=0.35x0.6=3.08x0.01=4.95x1000=6.9x0 仁 0.4x0.5=2.4一 0.8二 10.8-9=9.6-0.8=0.108-2=4.95-0.9=9.65-0.1=0.325x100=2.5x8=0.56-0
19、.7=0.125x4=3.28x0.1=3.9-0.13=7.2x0 仁 0.01x0.1=0.25x0.4=1.6-0.8=1-2.5=1.25x0.8=0-1.7=资料.3.2-0.04=0.22x102=0.25x3.97x4=50+160-40=120-144-18+35 347+45x2-4160-52 178-145-5x6+42=812-700-(9+31x11)=85+14X(14+208-26)1.2x2.5+0.8x2.5 8.9x1.25-0.9x1.25 12.5x7.4x0.8 9.9X6.4-(2.5+0.24)65x95+65x05 0.35x1.6+0.35x3
20、.4 6.72-3.28-1.72(4+0.4x0.25)8x7x1.25 1.65x99+1.65 48x1.25+50 x1.25x0.2x8 7.8x9.9+0.78(1010+309+4+681+6)“2 5.15x7/8+6.1-0.60625(284+16)x(512-8208-18)120-36x4-18+35(58+37)-(64-9x5)(3.2x1.5+2.5)-1.6 6-1.6-4=7.2-0.8-1.2x5=6.5x(4.8-1.2x4)=10.15-10.75x0.4-5.7 5.8x(3.87-0.13)+4.2x3.74 0.45+6.37+4.55 5.4+6
21、.9X3-(25-2.5)2x41846-620-380 4.8x46+4.8x54 0.8+0.8x2.5 1.25x3.6x8x2.5-12.5x2.4 28x12.5-12.5x20 23.65-(3.07+3.65)27.85-(7.85+3.4)3x9146x782x6x8549-0.25-4=(1.2+&8)x0.4=(58+370)-(64-45)=(58+37)-(64-9x5)95十(64-45)420+580-64x21-28=(136+64)x(65 345+23)=(6.8-6.8x0.55)-8.5 0.12x 4.8-0.12x4.8 3.2x(1.5+2.5)-1
22、.6 5.38+7.85-5.37=6-1.19x3-0.43=0.68x1.9+0.32x1.9 资料.32.52-(6+9.728-3.2)x2.5(7.1-5.6)xO.9-1.15-2.5 5.4-2.6x(3729)+0.62 12x6-(12-7.2)-6 方程：88x+43=8579 36x+58=2974 13x+25=1247 89x3 仁4063 27x+40=445 83x90=1653 29x35=545 97x+81=954 50 x-99=3101 80 x+17=1777 17x-37=609 88x+30二2758 80 x+85=565 49x+43=827
23、99x-98=6139 95x+94=1044 62x+77=6153 38x-15=2037 44x+23=1387 83X-38=4444 60 x+83=3203 21X+90=489 22x+23=2135 37x+28二509 67x+39=5466 12x6-7.2-6 92x+67=1079 38x+45=2021 64x67=2813 5x-96=94 84x56=4732 26x-61=2513 9x+86=500 9X-48=744 43x94=637 38x-69=2933 23X-40=696 48x-92=1684 39x+52=2470 56x-86=2770 96
24、x+95=3935 21x-70=1988 72x+15=7071 83x63=7656 47x+64=1944 38x+38=1178 68x+9仁4103 53x+65=1443 5x 67=48 46X-74=4112 74x-34=6700 7.82-7.2=3.4-1.4=2.19+9.1=10.1-0.89=资料.0.68+0.42=8.1-5.1=0.728024二 0.8+0.18=0.89-0.25=1-0.98=0.048+0.52=5x400=19.9+11.1=187-1000=1+3.89=0.081x10=75-10=0.96-0.8=0.8x7=1.5x7=1.3
25、2x8=0.7x8=10.3x2=5x0.6=0.9x03=3.5x0.2=2.01x0=10 x0.05=0.13x7=0.21x100=0.7x4=0.05x4=4x0.3=430-250=0.17+0.06=1.02-0.09=7200-800=0.17+0.6=0.83-0.6=17x300=0.98-0.09=0.2+0.78=600 x700=10.2+0.02=0.15+0.7=0.35+0.63=3500-70=3.1+3=670+250二 10.2+0.2=9.2-6=3.8+0.38=8500-500=3.2-3.2=3.7+2.3=7500-250=3.8+1=0.95-
26、0.05=25x100=3.2-0.32=2+2.8=450+780=3.1+0.3=3+0.3=380-290=0.35+0.5=630-9=4.504二 9.5-5=330 x9=9.53-1.53=9.5-0.5=3.5+2.4=1-0.95=0.3+0.27=0.47+0.13=4.5+4=4-0.6=0.95+0.05=2.5+3.2=0.74+0.16=23x100=9.8-4.8=480-40=0.53-100=5.1+23=125x80=0.078-10=0.52+0.4二 70 x12=资料.0.25x100=3428二 0.6-0.37=1-0.61=0.47+0.23=0
27、.25+0.75二 0.052x10=10+0.08=1-0.75=3.7+0.33=0.51+0.33=0.5x1000=0.82+0.3=1-0.6=8-4.6=5.8-3.6=0.52+0.4=6.45+5.5=4.5-1.3=3.428二 9.53-1.53=8.8-6.7=10+0.08=9.5-7.3=7.2+0.8=7.82+0.3=8.8-6.7=9.5-73=1-0.95=3.4-2.8=0.96-0.35=0.35x0.6=3.08x0.0 仁 13.5+6.5=3.05x100=1.2-0.8=21.6-12.6=63-100=0.83-0.5=0.76+0.14=80-
28、1000=2.7+0.4=0.72043二 30 x100=0.92-0.2=3.5+4.8=3.5+2.4=5+0.07=4.95x1000=6.9x0.1=0.4X0.5二 2.4十0.8二 资料.10.8-9=9.6-0.8=0.108-2=4.95-0.9=9.65-0.1=0.325x100=2.5x8=0.56-0.7=0.125x4=3.28x0仁 3.9-0.13=7.2x0 仁 0.01x0.1=0.25x0.4=1.6-0.8=1-2.5=1.25x0.8=3.2-0.04=0-1.7=4.7+23=4.5x2=6.9-2.5=7.2X0.8二 6x3.4=0.62-0.3
29、2=1.4x0.5=0.75x100=0.02x0.5=3.6-0.3=6.3-7=5.6-100=0.75-0.25=0.125x8=4.8-0.3=0.96-2=0.56-28=0.36-0.4=0.64-0.8=0.72-3.6=3.6-24=0.8x1.1=7.2+12.8=46.7-3.8=12.8-4=5.2-13=12.5-5=1.64-41=10-20=24-15=&65x10=0.35x0.6=3.08x0.01=4.95x1000=6.9x0.1=0.4x0.5=2.4一0.8二 10.8-9=9.6-0.8=0.108-2=4.95-0.9=9.65-0.1=资料.2.5
30、x8=0.125x4=3.9-0.13=0.01x0.1=1.6-0.8=1.25x0.8=0-1.7=9-0.25-4=(1.2+&8)xo.4=(58+370)-(64-45)347+45x2-4160-52 65x95+65x05 0.35x1.6+0.35x3.4 6.72-3.28-1.72 0.45+6.37+4.55 6-1.6-4=5.38+7.85-5.37=0.325x100=0.56-0.7=3.28x0.1=7.2x0.1=0.25x0.4=1-2.5=3.2-0.04=0.22x102=0.25x3.97x4=50+160-40 120-144-18+35(58+37
31、)-(64-9x5)95弓(64-45)178-145-5x6+42 420+580-64x21-28 812-700-(9+31x11)(136+64)x(65-345-23)85+14x(14+208-26)1.2x2.5+0.8x2.5 8.9x1.25-0.9x1.25 12.5x7.4x0.8 9.9X6.4-(2.5+0.24)(4+0.4x0.25)8x7x1.25 1.65x99+1.65 27.85-(7.85+3.4)48x1.25+50 x1.25x8 7.8x9.9+0.78(1010+309+4+681+6)X12(58+37)十(64-9x5)(6.8-6.8x0.
32、55)-8.5(3.2x1.5+2.5)-1.6 5.4+6.9X3-(25-2.5)2x41846-620-380 4.8x46+4.8x54 0.8+0.8x2.5 1.25x3.6x8x2.5-12.5x2.4 28x12.5-12.5x20 23.65-(3.07+3.65)3x9146x782x6x854 5.15x7/8+6.1060625 39.(284+16)x(512-8208-18)40.120-36x4-18+35 0.12x 4.8-0.12x4.8 3.2x(1.5+2.5)-1.6 资料.7.2-0.8-1.2x5=6-1.19x3-0.43=6.5x(4.8-1.
33、2x4)=0.68x1.9+0.32x1.9 10.15-10.75x0.4-5.7 5.8x(3.87-0.13)+4.2x3.74 32.52-(6+9.728-3.2)x2.5(7.1-5.6)xo.9-1.15-2.5 5.4-2.6x(3729)+0.62 12x6-(12-7.2)-6(4)12x6-7.2-6 方程：88x+43=8579 83x90=1653 36x+58=2974 29x35=545 13x+25=1247 97x+81=954 89x31=4063 50 x-99=3101 27x+40=445 80 x+17=1777 92x+67=1079 17x-37
34、=609 38x+45=2021 88x+30二2758 64x-67=2813 80 x+85=565 5x-96=94 49x+43=827 84X-56=4732 99x-98=6139 26x61=2513 95X+94=1044 9x+86=500 62x+77=6153 9X-48=744 38x-15=2037 43x-94=637 44x+23=1387 38x69=2933 83X-38=4444 23x-40=696 60 x+83=3203 48x-92=1684 21X+90=489 39x+52=2470 22x+23=2135 56x-86=2770 37x+28=
35、509 96x+95=3935 67x+39=5466 21x-70=1988 资料.72x+15=7071 83x63=7656 47X+64=1944 38x+38=1178 68x+91=4103 53x+65=1443 5X-67=48 46X-74=41 12 74X-34=6700 3.4-1.4=7.82-7.2=2.19+9.1=10.1-0.89=0.68+0.42=8.1-5.1=0.728-0.24=0.8+0.18=0.89-0.25=1-0.98=0.048+0.52=5x400=19.9+11.1=187-1000=1+3.89=0.081x10=75-10=0.9
36、6-0.8=0.8x7=1.5x7=1.32x8=0.7x8=10.3x2=5x0.6=0.9x0.3=3.5x0.2=2.01x0=10 x0.05=0.13x7=0.21x100=0.7x4=0.05x4=4x0.3=430-250=0.17+0.06=1.02-0.09=7200-800=0.17+0.6=0.83-0.6=17x300=0.98-0.09=0.2+0.78=600 x700=10.2+0.02=0.15+0.7=670+250=10.2+0.2=9.2-6=8500-500=3.2-3.2=3.7+2.3=25x100=3.2-0.32=2+2.8=5.1+2.3=资料
37、.380-290=0.35+0.5=0.35+0.63=3500-70=3.1+3=3.8+0.38=7500-250=3.8+1=0.95-0.05=450+780=3.1+0.3=3+0.3=630-9=4.5-0.4=9.5-5=330 x9=9.53-1.53=3.5+2.4=1-0.95=0.3+0.27=0.47+0.13=4.5+4=4-0.6=0.95+0.05=2.5+3.2=0.74+0.16=23x100=9.8-4.8=480-40=0.53-100=9.5-0.5=125x80=0.078-10=70 x12=0.25x100=3.4-2.8=0.6-0.37=0.0
38、52x10=10+0.08=1-0.75=0.5x1000=0.82+0.3=13.5+6.5=3.05x100=1.2-0.8=21.6-12.6=63-100=0.83-0.5=0.76+0.14=80-1000=2.7+0.4二 0.72-0.43=30 x100=0.92-0.2=3.5+4.8=3.5+2.4=5+0.07=1-0.61=0.47+0.23=0.25+0.75=3.7+0.33=0.52+0.4=0.51+0.33=0.52+0.4=资料.6.45+5.5=4.5-1.3=0.96-0.35=0.35x0.6=3.08x0.0 仁 4.95x1000=6.9x0 仁
39、0.4x0.5=2.4-0.8=10.8-9=9.6-0.8=0.108-2=4.95-0.9=3.28x0.1=3.9-0.13=7.2x0.1=0.01x0 4.5x2=6.9-2.5=7.2x0.8=6x3.4=0.62-0.32=1.4x0.5=0.75x100=0.75-0.25=0.125x8=4.8+0.3二 0.96-2=1-0.6=8-4.6=5.8-3.6=3.428二 9.53-1.53=8.8-6.7=10+0.08=9.5-7.3=7.2+0.8=7.82+0.3=8.8-6.7=9.5-7.3=1-0.95=342.8二 9.65-0.1=0.325x100=2.5
40、x8=0.56-0.7=0.125x4=0.25x0.4=1.6-0.8=1-2.5=1.25x0.8=3.2-0.04=0-1.7=4.7+23=0.02x0.5=3.6-0.3=6.3-7=5.6-100=0.56-28=0.64-0.8=资料.0.36-0.4=0.72-3.6=3.6-24=0.8x1.1=7.2+12.8=46.7-3.8=1.64-41=&65x10=0.35x0.6=3.08x0.01=4.95x1000=6.9x0.1=10.8-9=9.6-0.8=0.108-2=4.95-0.9=9.65-0.1=0.325x100=2.5x8=0.56-0.7=1-2.5=
41、1.25x0.8=3.2-0.04=0-1.7=2x102=9-0.25-4=34(58+37)-(64-9x5)35.95-(64-45)36.178-145-5x6+42 420+580-64x21-28 37.812-700-(9+31x11)(136+64)x(65-345-23)12.8-4=5.2-13=12.5-5=10-20=24-15=0.4x0.5=2.4+0.8二 0.125x4=3.28x0.1=3.9-0.13=7.2x0.1=0.01x0.1=0.25x0.4=1.6-0.8=0.25x3.97x4=(1.2+&8)x 0.4=50+160-40(58+370)(6
42、4 45)32.120-144-18+35 33.347+45x2-4160-52 3&85+14X(14+208-26)23)1.2x2.5+0.8x2.5 24)8.9x1.25-0.9x1.25 7.8x10=资料.278.6-1000=9.2-10=7.13-10=21.3-10=14.17-100=70.77-100=356.8-1000=3.2x3=1.4x0.5=0.08x6=7.1x0.25x4=16.4x2.9+16.4x7.1 7.2-3=8.4-4=0.65-5-5=0.93-3=2.7-9=3.8-2=54十08=4.6-2=1.8-0.3=4.2-7=9.6-0.6=
43、6.4-3.2=11-0.11=10-2.5=14-0.2=0.31+3二 10.5-5=0.28x1000=6.12x10=0.479x100=1-100=0.43-10=53.4-100=38.2-100=2.33-10=4.56-100=9.02-10=17.6x1000=5-100=1.5x0.3=0.71x2=0.25x4=1.25x8=4.3x2=1.2x0.4=0.6x0.9=3.4x0.3=5x0.6=4.5x2=0.03x0.5=1.6x0.3=0.23x3=5.1x2=9x0.3=7.1x3=1.5x6=0.9x0.4x10=0.68x8x1.25=资料.14.7-0.7=
44、2.8-2=20-0.5=0.96-3=9.6-1.2=17x40=3.44-2=100-63=65-0.3=3.2+1.68=9.9-11=2.8x0.4=14-7.4=4-20=0.32x500=3.5x200=0.65+4.35=1.5-0.06=10 5.4=0.75-15=4x0.25=420+35 二 0.36+1.54=25x12=1.01x99=135-0.5=0.4X0.8 二 4/5 7/10=3/4+1/4=4.9x0.7=2 1/6-1/3=1.6x0.4=2+4/9=7/8+3/8=3-2/3=3/10+1/5=3/4-1/2=0.51-17=32.8+19=5.2-1.3=1-5=3.71x10=1/6+1/21/6=75(25+3.8)二 0.6x100=4.5x1000=6-12=0.92x100=0.87-0.49=