Answer:

5th

Maths

Squares and Square Roots

Estimating Square Roots

Find the least number which...

MATHS

Find the least number which must be subtracted from each of the following numbers so as to get a perfect square Also find the square root of the perfect square so obtained

(i)402,(ii)1989,(iii)3250,(IV)825,(v)4000

A .

Least number which must be subtracted:(i)2,(ii)22,(iii)1,(iv)21,(v)52

Square root of the perfect square:

(i)20,(ii)34,(iii)55,(iv)26,(v)67

B .

Least number which must be subtracted:(i)2,(ii)53,(iii)1,(iv)41,(v)31

Square root of the perfect square:

(i)20,(ii)44,(iii)57,(iv)28,(v)63

C .

Least number which must be subtracted:(i)6,(ii)22,(iii)50,(iv)31,(v)40

Square root of the perfect square:

(i)19,(ii)41,(iii)49,(iv)27,(v)65

D .

Least number which must be subtracted:(i)8,(ii)41,(iii)12,(iv)56,(v)4

Square root of the perfect square:

(i)19,(ii)22,(iii)37,(iv)26,(v)61

December 26, 2019avatar

Kanhaiya Punitha

SHARE

ANSWER

For 402

Nearest perfect square is 400

400

= 20

402 − 400 = 2

For 1989

Nearest perfect square is 1936

1936

= 44

1936 − 1989 = 53

For 3250

Nearest perfect square is 3249

3249

= 57

3250 − 3249 = 1

For 825

Nearest perfect square is 784

784

= 28

825 − 784 = 41

For 4000

Nearest perfect square is 3969

3969

= 63

4000 − 3969 = 31