9.9×7.5+75×0.01的简便方法?
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9.9×7.5+75×0.01的简便方法?
9.9×7.5+75×0.01的简便方法:
9.9×7.5+75×0.01
=9.9*7.5+7.5*0.1
=(9.9+0.1)*7.5
=75
9.9×7.5+75×0.01的简便方法:
9.9×7.5+75×0.01
=9.9*7.5+7.5*0.1
=(9.9+0.1)*7.5
=75
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(一)9.9×7.5+75×0.01
=9.9×7.5+7.5×0.1
=(9.9+0.1)×7.5
=10×7.5
=75
(二)9.9×7.5+75×0.01
=0.99×75+75×0.01
=(0.99+0.01)×75
=1×75
=75
=9.9×7.5+7.5×0.1
=(9.9+0.1)×7.5
=10×7.5
=75
(二)9.9×7.5+75×0.01
=0.99×75+75×0.01
=(0.99+0.01)×75
=1×75
=75
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9.9×7.5+75×0.01
= 9.9 x7.5 +7.5x10x0.01
=9.9x7.5+7.5x0.1
=(9.9+0.1)x7.5
=75
= 9.9 x7.5 +7.5x10x0.01
=9.9x7.5+7.5x0.1
=(9.9+0.1)x7.5
=75
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