乘:0.5×0.5 除:1.2÷0.6 8.8÷8 63÷0.2 1.8÷3 10÷0.5
0.08x0.4
1.2x0.3
29.8x2
0.6x0.3
0.9x0.2
1.1x0.5
9.2x1
0.63x100