• 1. (2023五上·玉屏期中) 计算下面各题，能简算的要简算

  ①12.5×3.2×0.25

  ②13.5×10.1

  ③7.56÷1.25÷8

  ④1.25×3.8×8

  ⑤2.5×4.8+4.8×7.5

  ⑥6.43×2.78+6.43×8.12-6.43