请展开查看知识点列表
4.5×2= 4×2.5= 2.4× 0.5= 6.95-1.95-0.7=
8.4÷4= 9.9÷0.1= 0.8 ÷2+2 = 6.8+5.5-6.8=
①5.4×7.8=
②2.6×0.25=
③109.2÷0.42=
④0.66×0.42≈(得数保留三位小数)
⑤21÷24 =
进入组卷