1. (2020五上·南京期末) 能简便计算的用简便方法计算

①36.87－8.5－6.87

②13.4＋5.2＋17.6＋4.8

③0.125×0.25×8×4

④4.8×9.9

⑤8.62×1.1－8.62

⑥27.8×5.64＋71.2×5.64＋5.64