= = = =
15.8÷5=
4.68÷1.3=
25.2÷0.18=
3.08×2.5= △19.8÷5.5=
0.4×0.3= 2.5×0.6= 8.8×0.1= 0.24×0.5= 1.25×8= 0.8×50= 1.7×0.03= 0.35×0.4=
2000÷40=50 (米/分)
解决的问题是:
50×22=1100 (米)
2000-1100=900 (米)