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时间:2020-09-17
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1、.1、直接写出得数.0.45×2.5=0.8×1.25=0.3×3.6=0.3×0.3=10×0.07=0.3×1.4=0.05×7=0.92×0.4=0.2×0.26=0.14×4=0.02×0.1=1.2×0.3=0.2×0.4=8.2+1.8=100-35.22=2.3×4=2.5×0.4=2.4×5=0.22×4=3.25×0=0.9-0.52=3.99×1=0×3.52=12.5×8=8÷10=10-1.8-7.2=0.43+3.57=2.5×4×12=0.9×0.8=1.05×100=1÷0.5=0.96÷3=1.47÷0.7=5.4÷6=0.16.510=×0.56×100=3
2、.78×100=4÷0.8=3.215×100=0.8×10=4.08×100=1.1×0.2=0.6×0.8=3×0.9=2.5×0.4=3.6×0.4=12.5×8=50×0.04=80×0.3=1.1×9=0.16×5=1.78+2.2=9.6÷0.6=1.2×0.5-0.4=0.7÷0.01=2.5×0.4=12-3.9=1.25×8÷1.25=6.6÷0.66=3.9+2.03=27+456+73=0.3×0.3=7.2+2.8=0.9÷0.01=12÷0.3=2.87÷0.7=72.8÷0.8=8.4÷4.2=13.8+9.9=0.05×0.8=2.56-0.37=1.23×3=
3、2、用竖式计算0.396÷1.2=0.756÷0.36=15.6×13=0.18×15=3.06×36=0.04×0.12=0.025×14=5.76×3=35.4×4.20.042×0.540.76×0.320.25×0.0462.52×3.4;..1.08×254.8×0.25=0.125×1.4(保留两位小数)≈3.84×2.6≈(保留一位小数);.
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