6.12乘99加6.12和5.9乘101减5.9怎么简便计算

分类: 作业答案 • 2021-12-18 17:05:50

问题描述：

答

6.12×99+6.12
=6.12×(99+1)
=6.12×100
=612
5.9×101-5,9
5.9×(101-1)
5.9×100
=590

答

6.12*99+6.12=6.12*（1+99）=6.12*100=612
5.9*101-5.9=5.9*（101-1）=5.9*100=590

答

6.12乘99加6.12
=6.12*(99+1)
=6.12*100
=612
5.9乘101减5.9
=5.9*(101-1)
=5.9*100
=590

答

6.12*(99+1)
5.9*(101-1)