1.37x5.6+0.63x4.4等于多少？
2个回答
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1.37x5.6+0.63x4.4
=1.37x4.4+1.37×1.2+0.63x4.4
=（1.37+0.63）×4.4+1.644
=2×4.4+1.644
=8.8+1.644
=10.444
=1.37x4.4+1.37×1.2+0.63x4.4
=（1.37+0.63）×4.4+1.644
=2×4.4+1.644
=8.8+1.644
=10.444
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展开全部
1.37x5.6+0.63x4.4
=(1+0.37)x5.6+(1-0.37)x4.4
=5.6+0.37x5.6+4.4-0.37x4.4
=(5.6+4.4)+0.37x(5.6-4.4)
=10+0.37×1.2
=10+0.37×1+0.37×0.2
=10+0.37+0.074
=10.444
=(1+0.37)x5.6+(1-0.37)x4.4
=5.6+0.37x5.6+4.4-0.37x4.4
=(5.6+4.4)+0.37x(5.6-4.4)
=10+0.37×1.2
=10+0.37×1+0.37×0.2
=10+0.37+0.074
=10.444
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