①69×101
②18.5-4.6-5.4
③2.5÷
④
⑤
①714÷21+24×5
②0.25×3.2×1.25
③(0.52×2.4)÷(0.8×2.6)
④÷7+×
⑤17×11×(+)
⑥解比例:=x:25
①2021÷1.25÷
②5.74×12.5%+1.26÷8+
③(-0.6)÷(-)
④0.8÷[(+)×]
①634﹣3.2×1.5÷0.1
②9.43+0.78﹣3.43
③
⑥