（要用运算定律）

46.3X0.56+5.38X5.6-0.056＝46.3X0.56＋53.8X0.56－0.56×0.1＝0.56×﹙46.3＋53.8－0.1﹚＝0.56×100＝5611X22+0.22X3300+330x4.4＝11X22＋22×33＋33×2×22＝22×﹙11＋33＋66﹚＝22×110＝2420...