怎么用简便方法计算:45x16,25x32和35x14

2025-04-01 11:37:51
推荐回答(1个)
回答1:

45x16
=45×2×8
=90×8
=720

25x32
=25×4×8
=100×8
=800

35x14
=35×2×7
=70×7
=490