题目内容：

19.88+9.9*198.8(简算)

优质解答

19.88+9.9*198.8
=19.88+9.9*(19.88*10)
=19.88+19.88*(9.9*10)
=19.88+198.88*99
=19.88*(1+99)
=19.88*100
=1988