①24×()
②×17
③
④
⑤
- = ×1 = ( ): = + -0.4=
①
②
①101×9.9
②44﹣72÷
③36×()
④÷[(﹣)×3]
⑤95×3.8+6.2÷
⑥0.25×40÷0.25×40