速算,说明如下1、十几乘十几,口诀:头乘头,尾加尾,尾乘尾;例:18*16= 1*1=1 8+6=14 8*6=48 结果为11448 (正确答案为288)17*15= 1*1=1 7+5=12 7*5=35 结果为11235 (正确答案为255)2、十几乘任意数,口诀:
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![速算,说明如下1、十几乘十几,口诀:头乘头,尾加尾,尾乘尾;例:18*16= 1*1=1 8+6=14 8*6=48 结果为11448 (正确答案为288)17*15= 1*1=1 7+5=12 7*5=35 结果为11235 (正确答案为255)2、十几乘任意数,口诀:](/uploads/image/z/3930751-55-1.jpg?t=%E9%80%9F%E7%AE%97%2C%E8%AF%B4%E6%98%8E%E5%A6%82%E4%B8%8B1%E3%80%81%E5%8D%81%E5%87%A0%E4%B9%98%E5%8D%81%E5%87%A0%2C%E5%8F%A3%E8%AF%80%EF%BC%9A%E5%A4%B4%E4%B9%98%E5%A4%B4%2C%E5%B0%BE%E5%8A%A0%E5%B0%BE%2C%E5%B0%BE%E4%B9%98%E5%B0%BE%EF%BC%9B%E4%BE%8B%EF%BC%9A18%2A16%3D+1%2A1%3D1+8%2B6%3D14+8%2A6%3D48+%E7%BB%93%E6%9E%9C%E4%B8%BA11448+%EF%BC%88%E6%AD%A3%E7%A1%AE%E7%AD%94%E6%A1%88%E4%B8%BA288%EF%BC%8917%2A15%3D+1%2A1%3D1+7%2B5%3D12+7%2A5%3D35+%E7%BB%93%E6%9E%9C%E4%B8%BA11235+%EF%BC%88%E6%AD%A3%E7%A1%AE%E7%AD%94%E6%A1%88%E4%B8%BA255%EF%BC%892%E3%80%81%E5%8D%81%E5%87%A0%E4%B9%98%E4%BB%BB%E6%84%8F%E6%95%B0%2C%E5%8F%A3%E8%AF%80%EF%BC%9A)
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