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下面各题怎样算简便就怎样算.(1)49×914÷421 (2)0.8+12÷56(3)(47
问题详情
(1)
参考答案
(1)49×914÷421,
=49×914×214,
=32;
(2)0.8+12÷56,
=0.8+0.6,
=1.4;
(3)(47+38)×56,
=56×47+38×56,
=32+21,
=53;
(4)38+47+14×25,
=38+47+110,
=5356+110,
=293280;
(5)(0.25+13)×(1.6÷45),
=712×2,
=76;
(6)34×[1÷(56+34)],
=34×(1÷1912),
=34×1219,
=919.
考点: