Question

99乘87加99的简便运算

Answer 1

99乘87加99
=99x(87+1)
=（100-1）x88
=100x88-88
=8800-88
=8712

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Answer 2

=99×(87+1)
=99×88
=(100-1)×88
=100×88 - 1×88
=8800 - 88
=8712

Answer 3

=99×(87+1)
=(100-1)×88
=100×88-88
=8800-88
=8712

Answer 4

99×87＋99＝99×（87＋1）＝99×88＝（100－1）×88＝100×88－88＝8800－88＝8712

Answer 5

99*87+99
=99*（87+1）
=99*88
=（100-1）*88
=8800-88
=8712