Latihan tambahan

求被除的 dekad = cari dekad yang dibahagi 用乘法倒推：先把商“几个 dekad 几年”换成年，乘以除数，得到被除数的年数；再把年数除以十，换成 dekad。 例子：□ dekad ÷ 4 = 1 dekad 5 年 → 15 × 4 = 60 年 → □ 是 6。 注意：商里的年也要一起乘，漏掉就会少了几个 dekad。

find the dekad divided = cari dekad yang dibahagi Work backwards: change the quotient in dekad and years into years, multiply by the divisor to get the years divided, then divide by 10 to change them into dekad. Example: □ dekad ÷ 4 = 1 dekad 5 years → 15 × 4 = 60 years → □ is 6. Watch out: the years in the quotient must be multiplied too, or some dekad will be missing.

求被除的年数 = cari tahun yang dibahagi 用乘法倒推：先把商“几年几月”换成月，乘以除数，得到被除数一共多少个月；再把月数除以十二，换回年。 例子：□ 年 ÷ 4 = 1 年 3 个月 → 15 × 4 = 60 个月 = 5 年。 注意：年和月都要乘，只乘年会漏掉月的部分。

find the years divided = cari tahun yang dibahagi Work backwards: change the quotient in years and months into months, multiply by the divisor to get the total months, then divide by 12 to change them back into years. Example: □ years ÷ 4 = 1 year 3 months → 15 × 4 = 60 months = 5 years. Watch out: multiply both the years and the months; multiplying only the years misses the months.