98×64 简便方法计算?
4个回答
展开全部
98*64
=(100-2)*64
=100*64-2*64
=6400-2*60-2*4
=6400-120-8
=6280-8
=6272
请采纳谢谢
=(100-2)*64
=100*64-2*64
=6400-2*60-2*4
=6400-120-8
=6280-8
=6272
请采纳谢谢
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展开全部
98×64
=(100-2)×64
=100×64-2×64
=6400-128
=6272
=(100-2)×64
=100×64-2×64
=6400-128
=6272
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展开全部
(100-2)x64
=6400-128
=6272
(90+8)x64
=5760+512
=6272
98x(60+4)
=5980+392
=6272
98x(70-6)
=6860-598
=6272
=6400-128
=6272
(90+8)x64
=5760+512
=6272
98x(60+4)
=5980+392
=6272
98x(70-6)
=6860-598
=6272
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