2.2×3.3+3.3×4.4+4.4×5.5怎样简便计算
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2015-10-11
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2.2乘3.3+3.3乘4.4+4.4乘5.5
=1.1乘2乘1乘1.1乘3+1.1乘3乘1.1乘4+1.1乘乘4乘1.1乘5
=1.1乘1.1乘(2乘3+3乘4+4乘5)
=1.21乘38
=1.21乘(40-2)
=1.21乘40-1.21乘2
=48.4-2.42
=45.98
=1.1乘2乘1乘1.1乘3+1.1乘3乘1.1乘4+1.1乘乘4乘1.1乘5
=1.1乘1.1乘(2乘3+3乘4+4乘5)
=1.21乘38
=1.21乘(40-2)
=1.21乘40-1.21乘2
=48.4-2.42
=45.98
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提出一个1.1
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2.2×3.3+3.3×4.4+4.4×5.5
=3.3x(2.2+4.4)+4.4x5.5
=3.3x6.6+4.4x5.5
=3x6x1.1×1.1+4x5x1.1x1.1
=1.1x1.1x(3×6+4×5)
=1.21x38
=45.98
=3.3x(2.2+4.4)+4.4x5.5
=3.3x6.6+4.4x5.5
=3x6x1.1×1.1+4x5x1.1x1.1
=1.1x1.1x(3×6+4×5)
=1.21x38
=45.98
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