49✘99+49的简便运算

Question

如题所述

Answer 1

49✘99+49的简便运算
49×99+49
=49×(99+1)
=49×100=4900

Answer 2

解: 49Ⅹ99十49
=49X(99十1) (提取公因数)
=49Ⅹ100 (变成简算)
=4900

Answer 3

49*99+49

＝49*99+49*1

＝49*（99+1）

＝49*100

=4900

Answer 4

49×99+49
=49×(99+1)
=49×100
=4900