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1、精选优质文档-倾情为你奉上桃 源 县 桃 师 附 属 小 学六年级数学口算竞赛题班级: 姓名: 得分: 【挑战计算极限,争当计算明星!加油!】2=0.25= =+0.6=+0.25=+0.5=0.32=12.58= =0.2=-=2+=(1+)= 0.3754=94=1-=3+20=705+=5=5+=5+=136=0.84=3=0.75-=205=2-3.70.1% =20-1.8=3152.1-2.090.450.374%8+(-)=+=12.8= 0.4=8.1=28=0.460=1.250.89y4y21%2=208.3-3.31010=100= 60=3.6361=80=()10=2
2、541119850.28b0.52b2-2413=0.11532:160.125:0.3:0= =12=0.2=91250.008=0.23+177%=4.90.07=7.2 + 102=()7.5+2.545:0=0.625=5=5-=79 1.258=0.375=0.825%8.44.2=812.5%=0.130%=26=0.12564%49%37%88320.36750=0.1250.8=1085%0.875=18(3)=0.251.25320=1085%0.251.25320=0.03100.10.27.6502.31749%37%1250.0089y4y0.50.25.60.0818(3)=2950.367500.12564%125%0.75247775%=0.28b0.52b0.875=0.75247775%=0.00486=9.61.62=4950=480966 = 244+564=5(4134)=0.25(4) 3609=2.57.40.4=83.90.125=480966 =18(244)8(4020)=1.257+1.25=0.150.2+0.17=30203=0.2580-450.9=1.14+0.98=3.274.3+3.275.7=780+56=453512=100(25+4) 4=0.88-0.80.1= 专心-专注-专业