人教版六下口算练习册全册

2.1÷0.01＝2.48x＋1.2x=4.8×0.01=7.2÷0.8=2×1.3=0.6×0.5=1.4×0.5=6.3÷0.03=3.48－0.8＝2.7n－0.8n＝0.05×0.6＝0.15