56×3.7 2.8×26怎么简便计算?

2025-03-12 10:16:20
推荐回答(1个)
回答1:

56×3.7+2.8×26
=28×2×3.7+28×2.6
=28×7.4+28×2.6
=28×(7.4+2.6)
=28×10
=280