怎样简便就怎样算122×11+3939÷13(10.68×56+56×8.52)÷8534×25+14÷12523+(47+12)×7251117+813-(1117-513)[74-(716+0.25)]×89.
怎样简便就怎样算 122×11+3939÷13 | (10.68×+×8.52)÷ |
×25+÷ | +(+)× |
+-(-) | [-(+0.25)]×. |
答案和解析
(1)122×11+3939÷13
=1342+303
=1645;
(2)(10.68×
+×8.52)÷
=(10.68+8.52)×÷
=19.2××
=10;
(3)×25+÷
=×25+×25
=(+)×25
=25;
(4)+(+)×
=+×
=+
=;
(5)+-(-)
=+-+
=-++
=1;
(6)[-(+0.25)]×
=[-]×
=×
=.
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