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

Answer 2

32.81ⅹ99+32.81ⅹ10
=32.81ⅹ(99+10)
=32.81ⅹ109
=32.81x(100+9)
=32.81x100+32.81x9
=3281+295.29
=3576.29

Answer 3

32.81*99+32.81*10
=32.81*(100-1)+328.1
=32.81*100-32.81*1+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

其实这题也没有很简单的运算，并不是完全凑整，还是有整有零。
32.81ⅹ99+32.81ⅹ10
=32.81ⅹ(99+10)
=32.81ⅹ109
=32.81x(100+9)
=32.81x100+32.81x9
=3281+295.29
=3576.29