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

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＝32.81×(99＋10)

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＝32.81×109

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＝32.81×(100＋9)

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＝32.81×100＋32.81×9

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＝3281＋25.29

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＝3306.29

Answer 2

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

Answer 3

简便计算如下
32.81×99+32.81×10
=32.81×(100-1)+328.1
=32.81×100-32.81+328.1
=3576.29

Answer 4

因为99=100-1，所以原式等于32.81×（100-1）+32.81×10=32.81×100-32.81+328.1=3576.29

Answer 5

32.81×99+32.81×10
=32.81×（100-1）+328.1
=32.81×100-32.81+328.1
=3281-32.81+328.1
=3248.19+328.1
=3576.29