45乘35乘4简便计算怎么写?
问题描述:
45乘35乘4简便计算怎么写?
答
=(45×2)×(35×2)
==90×70
=6300
45乘35乘4简便计算怎么写?
=(45×2)×(35×2)
==90×70
=6300