①38×12+189÷9
②7.83× -0.83×
③23.5÷(4.75-4.5× )
④3.62- +1.38-
⑤
⑥
0.76++1.24+
4.2﹣1.38+5.8﹣3.62
×16.31﹣2.31÷
(+)×4+
÷[(+)×]
① ②
③ ④
① ÷[( - )× ]
②15.28-3.99-9.01
③ × - ÷4
①21×16÷14+76
②9- -
③ ×0.8×12.5
④48×( + - )
⑤7.6×9.4- +7.6×1.6
⑥ ×[ ÷(0.4- )]