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质数、合数易混、易错,于是我编了一首100以内质数儿歌,收到较好的效果,100以内质数儿歌:二、三、五、七、一十一:十三、十九和十七;二三、二九、三十一;三十七、四十一;四十三牵着四十七;五三、五九、六十一;六十七、七十一;七三、七九、八十三;八九后面是九七。这样编成质数儿歌,不但好记,而且还好用呢。有一次,我和小亮参加了一次考试,发表成绩后,我想知道小亮的成绩,可是他妈妈对我说:“他的名次乘以他的年龄,再乘以分数的积是2910。你猜
The prime numbers, the numbers are easy to mix and easy to be wrong, so I made a number of children’s songs of quality within 100, and received good results, 100 within the number of children’s songs: two, three, five, seven, eleven: thirteen, nineteen And seventeen; two three, two nine, thirty-one; thirty-seven, forty-one; forty-three By forty-seven; five three, five nine, sixty-one; sixty-seven, seventy-one; seven Three, seven nine, eighty-three; eight nine nine behind is nine seven. This is compiled into prime numbers children’s songs, not only easy to remember, but also easy to use yet. Once, I and Xiaoliang participated in an exam, published results, I want to know the results of Xiaoliang, but his mother said to me: ”His rank multiplied by his age, multiplied by the score of the product is 2910 .you guess