问题 解答题
下面各题,怎样算简便就怎样算.
389+327+211
608-154-146
587-98258+36×72
24×(9+11)525÷(155-130)
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.

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