相关经文
Ekādhikena Pūrvena
“比前一个多一”
用于5结尾数字的平方、特定数字的除法和求倒数
理论
For numbers near 100:
97² = (97-3=94) | (3²=09) = 9409 103² = (103+3=106) | (3²=09) = 10609
Left: Add/subtract deviation Right: Square of deviation
步骤
1
Find deviation from 100
97: deviation -3
2
Add deviation to number
97 + (-3) = 94
3
Square the deviation
3² = 09
4
Combine
9409
示例
97²
中等1
Deviation
-3
2
Left part
97-3=94
3
Right part
3²=09
4
Result
9409
答案：9409