2012—2013学年度第二学期五年级数学下口算竞赛题时间：20分钟满分：100分成绩：4.7+2.3=4.5×2=6.9－2.5=7.2×0.8=6×3.4=0.62－0.32=1.4×0.5=0.75×100=0.02×0.5=3.6÷0.3=6.3÷7=5.6÷100=0.75÷0.25=0.125×8=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=0.8×1.1=7.2+12.8=46.7－3.8=12.8÷4=5.2÷13=12.5÷5=1.64÷41=10÷20=24÷15=8.65×10=0.35×0.6=3.08×0.01=4.95×1000=6.9×0.1=0.4×0.5=2.4÷0.8=10.8÷9=9.6÷0.8=0.108÷2=4.95÷0.9=9.65÷0.1=0.325×100=2.5×8=0.56÷0.7=0.125×4=3.28×0.1=3.9÷0.13=7.2×0.1=0.01×0.1=0.25×0.4=1.6÷0.8=1÷2.5=1.25×0.8=3.2÷0.04=0÷1.7=0.22×102=9÷0.25÷4=0.25×3.97×4=（1.2＋8.8）×0.4=3.4-1.4=7.82-7.2=2.19+9.1=0.96÷0.8=0.8×7=1.5×7=1.32×8=0.7×8=10.3×2=5×0.6=0.9×0.3=3.5×0.2=10×0.05=0.13×7=0.21×100=0.7×4=0.05×4=4×0.3=430-250=0.17+0.06=1.02-0.09=7200÷800=0.17+0.6=0.83-0.6=17×300=0.98-0.09=0.2+0.78=600×700=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=25×100=3+0.3=0.15+0.7=25×4=