问题
解答题
|
答案
(1)144+99,
=144+100-1,
=243;
(2)735-498,
=735-500+2,
=237;
(3)199+296,
=200+300-1-4,
=495;
(4)526-298,
=526-300+2,
=228.
|
(1)144+99,
=144+100-1,
=243;
(2)735-498,
=735-500+2,
=237;
(3)199+296,
=200+300-1-4,
=495;
(4)526-298,
=526-300+2,
=228.