①-(-)
②
③7.95+2.97-5.95
④0.6×+÷
①12×(+)×25
②8×(+)+
③ ++++
④×21+13×
①7.4﹣6.62+20.6﹣13.38
②×+×
③(-+)÷
④2×0.8×12.5×50%
⑤÷(÷+)
⑥×[1÷(+)]
①
②1.25×1.3×80
③7.28-3.14+1.72-2.86
④
⑤
⑥
①25×125×32
②47×65-7784÷56
③( + )×48
⑤9.7-3.79+1.3-6.21
⑥ ×34+ +64÷9