题目内容
| 用简便方法计算. 144+99 | 735-498 | 199+296 | 526-298. |
(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.
=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.
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