Question

请问32.81×99+32.81×10的简便运算是怎么做的呢？

Answer 1

32.81×100+32.81×9
＝3281+32.81×10-32.81
＝3281+328.1-32.81

Answer 2

32.81×99+32.81×10
=32.81×（99+10）
=32.81×109
=3576.29

Answer 3

＝32.81x100＋32.81x10-32.81
＝3281＋328.1-32.81
＝3609.1-32.81
＝3576.29

Answer 4

32.81×99+32.81×10
＝32.81×（99+10）
=32.81×109
=3576.29

Answer 5