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1.3*11.6-1.6*1.3=1.3*(11.6-1.6)=1.3*10=130.65*101=0.65*(100+1)=0.65*100+0.65*1=65+0.65=65.65(4/9)/{[17/18-7/12]/[7/24]}=(4/9)/{[68/3-14]/7}=28/(68*3-14*9)=28/78=14/39213+74x3=71x3+74x3=(71+74)x3=145x3=435(4/7-3/7)+(1/5+4/5)=1/7+1=1又1/73/4x(4-4)x3/4=3/4x3/4=9/166/5-(9/12-8/12)x5/6=6/5x5/6~(1/12)=1x12=12(20+2/3)(21+1/3)=(21-1/3)(21+1/3)=212-(1/3)2=441-1/9=440又8/90.4x125x25x0.8=(0.4x25)x(125x0.8)=10x100=10001.25x(8+10)=1.25x8+1.25x10=10+12.5=22.59123-(123+8.8)=9123-123-8.8=9000-8.8=8991.21.24x8.3+8.3x1.76=8.3x(1.24+1.76)=8.3x3=24.99999x1001=9999x(1000+1)=9999x1000+9999x1=1000899914.8x6.3-6.3x6.5+8.3x3.7=(14.8-6.5}x6.3+8.3x3.7=8.3x6.3+8.3x3.78.3x(6.3+3.7)=8.3x10=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=3823132x125x25=4x8x125x25=(4x25)x(8x125)=100x1000=1000009048-268=(2600+2600+2600+1248)—26=2600—26+2600—26+2600—26+1248—269=100+100+100+48=3482881—43=(1290+1591)—434=1290—43+1591—43=30+37=673.2x42.3x3.75-12.5x0.423x16=3.2x42.3x3.75-1.25x42.3x1.6=42.3x(3.2x3.75-1.25x1.6)=42.3x(4x0.8x3.75-1.25x4x0.4)=42.3x(4x0.4x2x3.75-1.25x4x0.4)=42.3x(4x0.4x7.5-1.25x4x0.4)=42.3x[4x0.4x(7.5-1.25)]=42.3x[4x0.4x6.25]=42.3x(4x2.5)=42371.8+18—1.5-0.5x0.3=1.8+12-0.15=13.8-0.15=13.656.5x8+3.5x8-47=52+28-47=80-47(80-9.8)x5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.768x4/7m[1m(3.2-2.95)]=8x4/7-[1-0.25]=8x4/7-4=8/72700x(506-499)-900=2700x7-900=18900-900=2133.02-(148.4-90.85)-2.5=33.02-57.55-2.5=33.02-23.02=10(1-1-1)-5.1=(1-1)-5.1=0-5.1=018.1+(3-0.299-0.23)x1=18.1+1.7x1=18.1+1.7=19.82/9x1/5x2+2/9x7/10=2/9x(2/5+7/10)=2/9x11/10=11/451.25x(8+10)=1.25x8+1.25x10=10+12.5=22.51.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.781/2-(4/5-1⑵=1/2+1/2-4/5=1-4/5=1/54800-25-4=4800-(25x4)=4800-100=4800-100=482/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/83/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/73.2x0.125x2.5=0.125x8x(0.4x2.5)=1x10.4x125x25x0.8=(0.4x25)x(125x0.8)=10x100=10001.25x(8+10)=1.25x8+1.25x10=10+12.5=22.59123-(123+8.8)=9123-123-8.8=9000-8.8=8991.20.4x125x25x0.8=(0.4x25)x(125x0.8)=10x100=10001.25x(8+10)=1.25x8+1.25x10=10+12.5=22.59123-(123+8.8)=9123-123-8.8=9000-8.8=8991.21.24x8.3+8.3x1.76=8.3x(1.24+1.76)=8.3x3=24.99999x1001=9999x(1000+1)=9999x1000+9999x1=1000899914.8x6.3-6.3x6.5+8.3x3.7=(14.8-6.5)x6.3+8.3x3.7=8.3x6.3+8.3x3.78.3x(6.3+3.7)=8.3x10=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=3823132x125x25=4x8x125x25=(4x25)x(8x125)=100x1000=1000009048-268=(2600+2600+2600+1248)-26=2600-26+2600-26+2600-26+1248-269=100+100+100+48=3482881-43=(1290+1591)-434=1290-43+1591-43=30+373.2x42.3x3.75-12.5x0.423x16=3.2x42.3x3.75-1.25x42.3x1.6=42.3x(3.2x3.75-1.25x1.6)=42.3x(4x0.8x3.75-1.25x4x0.4)=42.3x(4x0.4x2x3.75-1.25x4x0.4)=42.3x(4x0.4x7.5-1.25x4x0.4)=42.3x[4x0.4x(7.5-1.25)]=42.3x[4x0.4x6.25]=42.3x(4x2.5)=42371.8+18m1.5-0.5x0.3=1.8+12-0.15=13.8-0.15=13.656.5x8+3.5x8-47=52+28-47=80-47(80-9.8)x5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.768x7分之4m[1m(3.2-2.95)]=8x4/7-[1-0.25]=8x4/7m4=8/72700x(506-499)-900=2700x7-900=18900-900=2133.02-(148.4-90.85)-2.5=33.02-57.55-2.5=33.02-23.02=10(1-1-1)-5.1=(1-1)-5.1=0-5.1=018.1+(3-0.299-0.23)x1=18.1+1.7x1=18.1+10.4x125x25x0.8=(0.4x25)x(125x0.8)=10x100=10001.25x(8+10)=1.25x8+1.25x10=10+12.5=22.59123-(123+8.8)=9123-123-8.8=9000-8.8=8991.21.24x8.3+8.3x1.76=8.3x(1.24+1.76)=8.3x3=24.99999x1001=9999x(1000+1)=9999x1000+9999x1=1000899914.8x6.3-6.3x6.5+8.3x3.7=(14.8-6.5)x6.3+8.3x3.7=8.3x6.3+8.3x3.78.3x(6.3+3.7)=8.3x10=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=3823132x125x25=4x8x125x25=(4x25)x(8x125)=100x1000=1000009048-2680=(2600+2600+2600+1248)^26=2600-26+2600-26+2600-26+1248-269=100+100+100+48=3482881-43=(1290+1591)-434=1290-43+1591-43=30+373.2x42.3x3.75-12.5x0.423x16=3.2x42.3x3.75-1.25x42.3x1.6=42.3x(3.2x3.75-1.25x1.6)=42.3x(4x0.8x3.75-1.25x4x0.4)=42.3x(4x0.4x2x3.75-1.25x4x0.4)=42.3x(4x0.4x7.5-1.25x4x0.4)=42.3x[4x0.4x(7.5-1.25)]=42.3x[4x0.4x6.25]=42.3x(4x2.5)=42371.8+18m1.5-0.5x0.3=1.8+12-0.15=13.8-0.15=13.656.5x8+3.5x8-47=52+28-47=80-473.7x2.56-2.3=9.472-2.3=7.1721.8x3.6+1.2x3.6=3.6x(1.8+1.2)=3.6x3=10.80.4x125x25x0.8=(0.4x25)x(125x0.8)=10x100=10001.25x(8+10)=1.25x8+1.25x10=10+12.5=22.51.8x3.6+1.2x3.6=3.6x(1.8+1.2)=3.6x3=10.80.4x125x25x0.8=(0.4x25)x(125x0.8)=10x100=10001.25x(8+10)=1.25x8+1.25x10=10+12.5=22.51.24x8.3+8.3x1.76=8.3x(1.24+1.76)=8.3x3=24.99999x1001=9999x(1000+1)=9999x1000+9999x1=1000899914.8x6.3-6.3x6.5+8.3x3.7=(14.8-6.5)x6.3+8.3x3.7=8.3x6.3+8.3x3.78.3x(6.3+3.7)=8.3x10=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=3823132x125x25=4x8x125x25=(4x25)x(8x125)=100x1000=1000009048-268=(2600+2600+2600+1248)-26=2600-26+2600-26+2600-26+1248-69=100+100+100+48=3482881-43=(1290+1591)-434=1290-43+1591-43=30+373.2x42.3x3.75-12.5x0.423x16=3.2x42.3x3.75-1.25x42.3x1.6=42.3x(3.2x3.75-1.25x1.6)=42.3x(4x0.8x3.75-1.25x4x0.4)=42.3x(4x0.4x2x3.75-1.25x4x0.4)=42.3x(4x0.4x7.5-1.25x4x0.4)=42.3x[4x0.4x(7.5-1.25)]=42.3x[4x0.4x6.25]=42.3x(4x2.5)=42371.8+18m1.5-0.5x0.3=1.8+12-0.15=13.8-0.15=13.656.5x8+3.5x8-47=52+28-47=80-47(80-9.8)x5分之2-1.32=70.2X2/5-1.32=28.08-1.32=26.768x7分之4m[1m(3.2-2.95)]=8x4/7-[1-0.25]=8x4/7-4=8/72700x(506-499)-900=27

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