Home › ICSE Class 8 › mathematics › Squares and Square Roots › The smallest number that must be subtracted from…
The smallest number that must be subtracted from 796 to make it a perfect square is:
A{'text': '8'}
B{'text': '12'}
C{'text': '10'}
D{'text': '14'}
Answer & Solution
Correct answer: B. {'text': '12'}
1. Find the largest perfect square ≤ 796.
2. 28² = 784 and 29² = 841.
3. So 784 is the largest perfect square ≤ 796.
4. The number to subtract is 796 − 784 = 12.
5. Hence the answer is **12**.
_Source: Selina Concise ICSE Class 8 Mathematics Ch 3 "Squares and Square Roots", Perfect square adjustments_
Related questions
A man spent on each day of his tour an amount in rupees equal to the number of days he wasThe value of √0.0784 + √0.000784 is:The square root of 0.001225 is:The smallest natural number by which 1620 must be multiplied to make a perfect square is:The value of √(248 + √(52 + √144)) is:The square root of 4761 (by long division) is:The unit digit of 47² is:The square root of the fraction 1764/2809 is: