2.5×2=0.5×10=0.6×8=2.1×2=

　　2.8×10=0.7×0.8=0.04×20=5.6+0.4=

　　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=0.86÷2=

　　0.56÷28=0.36÷0.4=0.64÷0.8=0.7×9=

　　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+4.1=

　　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=

　　不够告诉我