如题所述
第1个回答 2020-09-03
98✖️199用简便运算这么做,
98*199
=(100-2)*199
=19900-398
=19502本回答被网友采纳
98*199
=(100-2)*199
=19900-398
=19502本回答被网友采纳
第2个回答 2020-09-03
98X199
=98X(200-1)
=98X200-98X1
=19600-98
=19502
=98X(200-1)
=98X200-98X1
=19600-98
=19502
第3个回答 2020-09-03
=98x(200-1)
=98x200-98
=19800-98
=19702
=98x200-98
=19800-98
=19702