1、4.2×1000=0.45÷0.15=3.6÷0.1=8.5×100=8.5÷1.7=3.2÷100=1.2÷0.3=0.49÷7=0.04×25=0.096÷0.03=84÷4.2=1000×0.756=0.5×100=0÷0.25=1÷0.01=1.25×8=3.8×2=7.2÷0.9=1.6×0.2=9.3÷0.3=4÷0.4=0.45÷0.5=

2、0.2÷0.01=0.9×6=2.1×0.3=7×0.08=1.87×0=0.24×5=0.2×0.5=60×0.5=0.05×1.6=0.5×1.1=0.8×0.5=6÷0.12=1.25×4=4×0.25=

3、0.4÷8=1.8×0.5=8÷0.5=0.32÷16=2.5÷10=6.3÷2.1=0.92÷4=80÷1.6=6.2＋1.7=0.56÷14=1.6÷0.8=6.3÷9=0.15×8=7.2÷0.6=4.2÷1.4=3.9÷3.9=0÷6.81=1.47×0.4=0.4×0.25＝1.5×4=2.5×4=0.13×4=5.4÷10=0.18×0.3=

4、1.6×5=0.37×20=2.3×0.6＝0.81÷0.9=6.8－0.08=2.8－1.8＝0.25×28=0.72÷0.12=96÷2.4=1.25×1000=0.19×300=0.24×500=0.25×8=4.2×0.4=7.2÷0.08=5.6÷3.5=0.06×0.3=3.6÷0.45=0.8×0.125=3.5×0.2=24÷0.25=1.6÷0.25=

5、1.2×0.8=1.2÷0.8=100÷2.5=3.24＋1.76=1－0.98=1－0.001=7.2×1.25=12×0.5=5×1.8=6.5÷0.13=48×0.25=19.9×2.5=3.9×4＝6.30÷7＝0.8×0.7=48÷0.6=2.5×16=0.9×0.6=2.5×4=1-0.74=3.9＋0.8=0.7－0.19=

6、1.21÷11=1.44÷9=6.43＋1.95=1－0.763.5＋7.5=0.65÷0.5=6.43＋1.57=6－5.03=0.14×6=10÷0.4=2.76×100=3.56÷100=1.02×8=35－0.35=0÷0.25=1000÷12.5=1.44÷12=0×3.56=0.36×2=0.51÷17=10÷0.4=0.25×8=0.14×6=

7、0.85+0.15=36×2.5=0.99÷9=8.8÷4=7.6÷2=4.4＋56=2.1×32=1.25×0.8＝0.56＋0.44＝7－5.3＝0.8－0.23＝1－0.89＝5.8＋4.2＝1.23－0.6＝