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searchtune

Apr 14, 2013

#### Q1 find the least number which must be added to 7900 to obtain a perfect square?Q2 find the least number which must be subtracted from 2509 to make it a perfect square?



first find the square root of 7900.
by prime factorisation method
quotient+i 2=88+1=89...

Sameer

May 17, 2014



Soumik paul

Sep 15, 2014



69

Charles Baidya

Aug 11, 2014

#### Express the following number in usual form.  1) 3.02 x 10-6   2) 4.5 x 104  3) 3.61492 x 106   4) 1.0001 x 109



1.  3.02 x 10-6 = 3.02 × 1000000 = 3020000
2. 4.5 x 104 = 4.5 × 10000 = 45000
3. 3.61492 x 10

Sheetal Negi

Sep 19, 2013

#### the length and breadth of the rectangle are in the ratios 4:3. if the diagonal  measures 25 cm, find the perimeter of rectangle



Solution:
Let the length of rectangle = 4x and its breadth = 3x
Diagonal of the rectangle = 25 cm
In a rectangle,
Diagonal2 = Length2

Anuj A

Nov 3, 2014

#### the smallest no divisible by 12, 15, 20 and is a perfect square



12 = 2 x 2 x 3

15 = 3 x 5

20 = 2 x 2 x 5

So, LCM = 2 x 2 x 3 x 5 = 60

As 3 and 5 are not in pair in LCM’s factor so we need to multiply 60 by 5 ...

Shivam

Jun 24, 2014

#### By which smallest number should we multiply 3388 to make it a perfect square? Find the square root of the perfect square?



Smallest number  which should be multiply by 3388 to make it a perfect square is  multiplying 2 by 3388 we get 23,716 .
Square root of 23,716 is 154

Jul 30, 2013



9

Sahil

Oct 18, 2014



Sanskritisuri

Apr 6, 2014



### Long division method:     Steps:   1) Draw the lines over pairs of digits from right to le...

Apr 14, 2013

#### Q1 find the least number which must be added to 7900 to obtain a perfect square?Q2 find the least number which must be subtracted from 2509 to make it a perfect square?



first find the square root of 7900.
by prime factorisation method
quotient+i 2=88+1=89...

Sameer

May 17, 2014



Soumik paul

Sep 15, 2014



69

Charles Baidya

Aug 11, 2014

#### Express the following number in usual form.  1) 3.02 x 10-6   2) 4.5 x 104  3) 3.61492 x 106   4) 1.0001 x 109



1.  3.02 x 10-6 = 3.02 × 1000000 = 3020000
2. 4.5 x 104 = 4.5 × 10000 = 45000
3. 3.61492 x 10

Sheetal Negi

Sep 19, 2013

#### the length and breadth of the rectangle are in the ratios 4:3. if the diagonal  measures 25 cm, find the perimeter of rectangle



Solution:
Let the length of rectangle = 4x and its breadth = 3x
Diagonal of the rectangle = 25 cm
In a rectangle,
Diagonal2 = Length2

Anuj A

Nov 3, 2014

#### the smallest no divisible by 12, 15, 20 and is a perfect square



12 = 2 x 2 x 3

15 = 3 x 5

20 = 2 x 2 x 5

So, LCM = 2 x 2 x 3 x 5 = 60

As 3 and 5 are not in pair in LCM’s factor so we need to multiply 60 by 5 ...

Shivam

Jun 24, 2014

#### By which smallest number should we multiply 3388 to make it a perfect square? Find the square root of the perfect square?



Smallest number  which should be multiply by 3388 to make it a perfect square is  multiplying 2 by 3388 we get 23,716 .
Square root of 23,716 is 154

Jul 30, 2013



9

Sahil

Oct 18, 2014