①
②
③
④
① ②
③ ④
①÷×
②×3.2+6.8÷
③105×(+)
④﹣+﹣
⑤6.4÷[(3﹣1.4)×]
①21×16÷14+76
②9- -
③ ×0.8×12.5
④48×( + - )
⑤7.6×9.4- +7.6×1.6
⑥ ×[ ÷(0.4- )]
①38×12+189÷9
②7.83× -0.83×
③23.5÷(4.75-4.5× )
④3.62- +1.38-
⑤
⑥