関連ワード:  factorization method class 8    factorization method grade 8    prime factorization method class 8    factorization division method class 8    factorization long division method class 8    common factor method. class 8    square root by factorization method class 8    square root by prime factorization method class 8    factorization class 8 formulas    factorisation class 8 examples