10.1x0.25=(10+0.1)x0.25=10x0.25+0.1x0.25=2.5+0.025=2.525
10.1×0.25=(10+0.1)x0.25=10x0.25+0.1x0.25=2.5+0.025=2.525希望能帮到你!
10.1×2.5=(10+0.1)×2.5=10×2.5+0.1×2.5=25+0.25=25.25