125+75×27
34×(721-678)
204×3÷2
248÷8+16
161÷7×3
110+215÷5
35×(70-19)
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1
①8×2.5×0.125÷
②(+﹣)×24
③6.5÷×
④(+)×+
⑤4×(﹣)×9
⑥÷7+×