A-A+
计算下面各题 能简算的要简算.45-310-15 23-(512-14)1112-310+1
问题详情
参考答案
(1)45-310-15,
=810-310-210,
=310;
(2)23-(512-14),
=23-16,
=12;
(3)1112-310+112-710,
=(1112+112)-(310+710),
=1-1,
=0;
(4)14-18+56,
=18+56,
=2324;
(5)1916-(316+78),
=1916-316-78,
=1-78,
=18;
(6)813+1517+1813+217,
=(813+1813)+(1517+217),
=2+1,
=3.
考点: