0.4×3.7×250
36×()
35×1.25+8×35 9× 25×
0.125×0.25×32 0.375×3.4+4.6×
(-+)÷ 6.72-2.3÷0.5×0.8
①25×32×1.25
②(+0.375)÷(×)
③×+÷7
④6﹣(+)
①26×15﹣200
②8×4×12.5×0.25
③×+
④12÷[()×]
①7.4﹣6.62+20.6﹣13.38
②×+×
③(-+)÷
④2×0.8×12.5×50%
⑤÷(÷+)
⑥×[1÷(+)]