Question

请问32.81×99+32.81×10的简便运算是怎么做的呢？

Answer 1

原式=32.81×99+32.81×1+32.81×10-32.81×1

=32.81×（99+1）+328.1-32.81

=3281+328.1-32.81

=3663.1-32.81

=3630.29

Answer 2

32.81×99+32.81×10
=32.81×（100-1）+32.81×10
=32.81×100-32.81+32.81×10
=3281-32.81+328.1
=3281+328.1-32.81
=3609.1-32.81
=3576.29

Answer 3

32.81×99+32.81×10
=32.81×（100-1）+32.81×10
=32.81×100-32.81+328.1
=3281+328.1-32.81
=3609.1-32.81
=3576.29

Answer 4

可以这样简便运算：
原式=32.81*（100-1+10）
=32.81*100-32.81+328.1
=3576.29

Answer 5

32.81×99+32.81×10=32.81×(100-1)+32.81×10=3281-32.81+328.1=3576.29。将乘法转换成多个加减法。本题中通过凑十法，进行简便计算，最终结果为3576.29。