✔ 最佳答案
接着將這些數字乘九的倍數.這數的妙處,可以從這些算式裡看出
原來的數很有規律,乘過9以後,得到的數更有規律,變成9個1了
這些題目的被乘數和乘數都很容易記住.反覆做這幾題,用不着抄題目,也不用对答案,十分方便“in English
英文可翻譯成:
Then the number by a multiple of nine. The number of beauty, as can be seen from these formulas.The original number is very regular, then by 9, the number of more regular, into a 9 and 1The multiplicand and multiplier are easy to remember. Repeating this several questions, don't copy the questions, not to answer, " in English is very convenient