①16+4÷( - )
②1.7+3.98+2.3
③( + )× +
④1÷
⑤4.8×3.9+6.1×4.8
①18 -(2.35+8.6)(用简便方法)
②125%×3.2×25(用简便方法)
③76× +23÷ +60%(用简便方法)
④2020× (用简便方法)
⑤( - )×( - )
⑥ ×[1-( - )]
①7.4﹣6.62+20.6﹣13.38
②×+×
③(-+)÷
④2×0.8×12.5×50%
⑤÷(÷+)
⑥×[1÷(+)]
①2.75×6.2+27.5×0.38
②0.125×32×2.5
③15.72-2.17-1.83+4.28
④
⑤
⑥