A-A+
能简便计算的用简便方法计算. 1013÷3526×7347×14+0.25×37-14(78
问题详情
能简便计算的用简便方法计算.
参考答案
(1)1013÷3526×73,
=47×73,
=113;
(2)47×14+0.25×37-14,
=0.25×(47+37-1),
=0.25×0,
=0;
(3)(78+1316)÷1316,
=78×1613+1316×1613,
=1113+1,
=2113;
(4)17×512+512÷75,
=512×(17+57),
=512×67,
=514;
(5)15÷[(23+15)×113],
=15÷[1315×113],
=15÷115,
=3;
(6)12+16+112+120+…190,
=1-12+12-13+13-14+14-15…+19-110,
=1-110,
=910.
考点:方法