( ) 改正:
48÷0.6=
2.5×0.4=
1.25×8=
0.99÷0.01=
10÷0.5=
0÷16.8=
0.2×0.05=
8x-5x=
3.7+3=3.7×3 0.9÷1.50.9×1.5
9.99÷0.01999×0.01 0.21×0.210.21÷0.21
图 形
个 数