下列各题怎样简便怎样算。2.7x3.7+0.37x73，1.25x0.4x80x2.5，
2个回答
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2.7x3.7+0.37x73
=2.7x3.7+3.7x7.3
=3.7x(2.7+7.3)
=3.7x10
=37
1.25x0.4x80x2.5
=(1.25x80)x(0.4x2.5)
=100x1
=100
=2.7x3.7+3.7x7.3
=3.7x(2.7+7.3)
=3.7x10
=37
1.25x0.4x80x2.5
=(1.25x80)x(0.4x2.5)
=100x1
=100
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2.7x3.7+0.37x73
=2.7x3.7+7.3x3.7
=(2.7+7.3)x3.7
=10x3.7
=37
1.25x0.4x80x2.5
=1.25x80x(0.4x2.5)
=100x1
=100
=2.7x3.7+7.3x3.7
=(2.7+7.3)x3.7
=10x3.7
=37
1.25x0.4x80x2.5
=1.25x80x(0.4x2.5)
=100x1
=100
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