(2.1+0.54)÷0.2
7.4×0.56+0.44×7.4
9.4×10.1
100÷(1.25÷1.5)
①4.05÷1.5÷0.3
②3.2÷0.2+3.2÷0.8
③1.25×32×2.5
④3.7×8.3+0.83×63
①836-192÷8×16
②1.4÷(1.4+0.7)
③0.8×0.4×12.5×0.25
④ ÷6+ ÷20
⑤14×19×( + )
⑥ ÷[( + )÷ ]