6
1.961.96÷1.01,2.85×2.62.85,1.25÷0.361.25
10÷0.01= 0.22+0.8= 3.5×0.4= 5÷9=
4÷0.25= 0÷19.8= 12.12÷0.6= 0.4×0.5÷0.5×0.4=
想一想,按这样排下去,第8个点阵共有个点。