①12.5×4.8
②28.5÷15×5.6
③21÷0.25÷0.4
④0.55×5.6+0.45×5.6
⑤24.6×18-24.6×8.
⑥20.9+8.5÷(5.2-3.5)
①634﹣3.2×1.5÷0.1
②9.43+0.78﹣3.43
③
④
⑤
⑥