75x3x4的巧算

Question

如题所述

Answer 1

75x3x4
=25x3x3x4
=25x4x（3x3）
=100x9
=900
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Answer 2

75*3*4=75*10+75*2=750+150=900本回答被提问者采纳

Answer 3

=75×4×3
=300×3
=900

Answer 4

25×3×3×4
=25×4×9
=100×9
=900本回答被网友采纳

Answer 5

25*3*3*4=100*9=900