3.2×5.6=5.6× 0.125×3.2=0.125××
5.5×10.1=5.5×+5.5×
75×0.8 75 1.1×6.7 6.7 1×0.99 0.99
6.90.99×6.9 3.99x 13.99 12.712.7×1.8
5.5×2.1=
5.5×=1.155
9.38×0.99.38 1×0.680.68
3.8×1.013.8 2.36×1.523.6×0.15
×=38.5
×=3.85
385÷=0.385
10000999 1.87×0.951.87
÷ a×1.5a÷ (a>0)