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计算.(能简算的要用简便方法计算.) 512×725×31479÷12÷3536114×(7
问题详情
计算.(能简算的要用简便方法计算.)
参考答案
(1)512×725×314,
=760×314,
=140;
(2)79÷12÷3536,
=149×3635,
=85;
(3)114×(78+7),
=114×78+7×114,
=116+12,
=916;
(4)35×89÷58,
=815×85,
=6475;
(5)56×14+56×34,
=56×(14+34),
=56×1,
=56;
(6)96×45-36÷54+45×40,
=96×45-36×45+45×40,
=(96-36+40)×45,
=100×45,
=80;
(7)49÷[(13-19)×2],
=49÷[29×2],
=49÷49,
=1;
(8)34+79+14-49,
=(34+14)+(79-49),
=1+13,
=113;
(9)27×59÷27×59,
=27×59×72×59,
=(27×72)×(59×59),
=1×2581,
=2581;
(10)(1112-37)-(47-712),
=1112-37-47+712,
=(1112+712)-(37+47),
=32-1,
=12;
(11)35×0.25+35×34,
=35×(0.25+34),
=35×1,
=35.
考点:方法