小学简便计算 急
用简便方法计算:(1)2.64×51.9+264×0.481(2)9.16×1.53-0.053×91.6...
用简便方法计算:(1)2.64×51.9+264×0.481
(2)9.16×1.53-0.053×91.6 展开
(2)9.16×1.53-0.053×91.6 展开
2013-09-25
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(1)2.64×51.9+264×0.481
=264×0.519+264×0.481
=264×(0.519+0.481)
=264×1
=264
(2)9.16×1.53-0.053×91.6
=9.16×1.53-0.53×9.16
=9.16×(1.53-0.53)
=9.16×1
=9.16
=264×0.519+264×0.481
=264×(0.519+0.481)
=264×1
=264
(2)9.16×1.53-0.053×91.6
=9.16×1.53-0.53×9.16
=9.16×(1.53-0.53)
=9.16×1
=9.16
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2013-09-25
展开全部
(1)2.64×51.9+264×0.481
=264 ×0.519+264×0.481
=264×(0.519+0.481)
=264×1
=264
(2)9.16×1.53-0.053×91.6
=91.6×0.153-0.053×91.6
=91.6×(0.153-0.053)
=91.6×0.1
=9.16
=264 ×0.519+264×0.481
=264×(0.519+0.481)
=264×1
=264
(2)9.16×1.53-0.053×91.6
=91.6×0.153-0.053×91.6
=91.6×(0.153-0.053)
=91.6×0.1
=9.16
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2013-09-25
展开全部
(1)2.64×51.9+264×0.481=2.64×(51.9+48.1)=264
(2)9.16×1.53-0.053×91.6 =9.16×(1.53-0.53)=9.16
(2)9.16×1.53-0.053×91.6 =9.16×(1.53-0.53)=9.16
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