ICSE ICSE Class 8 - CISCE Question Bank Solutions for Mathematics

Find the square root of the following correct to two decimal place: `6 7/8`

Factorise : 3x⁵y - 27x⁴y² + 12x³y³  

Factorise : x²(a-b)-y² (a-b)+z²(a-b)  

Factorise : (x + y)(a + b) + (x - y)(a + b) 

Factorise : 2b (2a + b) - 3c (2a + b) 

For the following, find the least number that must be subtracted so that the resulting number is a perfect square.
796

Factorise : 12abc - 6a²b²c² + 3a³b³c³  

Factorise : 4x(3x - 2y) - 2y(3x - 2y) 

Factorise : (a+ 2b) (3a + b) - (a+ b) (a+ 2b) +(a+ 2b)² 

Factorise: 6xy(a² + b²) + 8yz(a² + b²) −10xz(a² + b²)

Find the square root of:

`(507)/(4107)`

Find the square root of 7.832 correct to: 2 significant digits.

Find the least number which must be added to 1205 so that the resulting number is a perfect square.

If a number ends with 3 zeroes, how many zeroes will its square have?

If the square of a number ends with 10 zeroes, how many zeroes will the number have?

Is it possible for the square of a number to end with 5 zeroes ? Give reason.

Give reason to show that none of the numbers, given below, is a perfect square.
(i) 2162
(ii) 6843
(iii) 9637
(iv) 6598

State, whether the square of the following number is even or odd?

23

Give reason to show that none of the numbers 640, 81000 and 3600000 is a perfect

Evaluate: 85² – 84²