问题
解答题
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答案
(1)389+327+211
=389+211+327
=600+327
=927;
(2)608-154-146
=608-(154+146)
=608-300
=308;
(3)587-98
=587-100+2
=487+2
=489;
(4)258+36×72
=258+2592
=2850;
(5)24×(9+11)
=24×20
=480;
(6)525÷(155-130)
=525÷25
=21.