6.5×5.5简便计算? 5
4个回答
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6.5×5.5
=6.5×5+6.5×0.5
=32.5+3.25
=35.75
=6.5×5+6.5×0.5
=32.5+3.25
=35.75
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展开全部
6.5×5.5
=(6+0.5)×5.5
=6×5.5+0.5×5.5
=33+2.75
=35.75
=(6+0.5)×5.5
=6×5.5+0.5×5.5
=33+2.75
=35.75
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展开全部
5×1.3×5×1.1
5×5×(1.3×1.1)
5×5[1.3×(1+0.1)]
5×5×(1.3×1+1.3×0.1)
5×5×(1.3+0.13)
5×5×1.43
5×(5×1.43)
5×7.15
35.75
5×5×(1.3×1.1)
5×5[1.3×(1+0.1)]
5×5×(1.3×1+1.3×0.1)
5×5×(1.3+0.13)
5×5×1.43
5×(5×1.43)
5×7.15
35.75
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=1.6×4×2.5
=1.6×(4×2.5)
=1.6×10
=16
=1.6×(4×2.5)
=1.6×10
=16
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