Question

请问32.81×99+32.81×10的简便运算是怎么做的呢？

Answer 1

32.81*99
就是3281-32.81+328.1
328.1
32.81
295.29
3281
也就是3576.29

Answer 2

32.81×99+32.81×10
=32.81×（100-1）+32.81×10
=32.81×100-32.81×1+32.81×10
=3281+328.1-32.81
=3576.29

Answer 3

解:原式
=32.81×(100－1)+328.1
=32.81×100－32.81+328.1
=3281+328.1－32.81
=3576.29

Answer 4

32.81×99+32.81×10
=32.81×（100-1）+328.1
=3281-32.81+328.1
=3576.29

Answer 5

应该是32.81×99+3.281×10＝32.81×99+32.81×1＝32.81×（99+1）＝32.81×100＝3281