ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1

Choose the correct answer from the given four options (1-2):
Question 1.
Sum of rational number \(\frac { 5 }{ 7 }\) and its additiveinverse is
(a) 1
(b) 0
(c) -1
(d) none of these
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 1

Question 2.
Product of two rational numbers is 1. If one of them is \(\frac { 4 }{ 5 }\), then other is
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 2
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 3

Question 3.
Find the value of x for which \(\left(\frac{4}{9}\right)^{x} \times\left(\frac{3}{2}\right)^{-1}\) = \(\frac{8}{27}\).
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 4

Question 4.
Express the following numbers in standard form:
(i) 0.0000000000578
(ii) 345700000000000
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 5

Question 5.
Insert ten rational numbers between \(\frac{-4}{5}\) and \(\frac{2}{3}\).
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 6

Question 6.
Find the cube root of 50653.
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 7

Question 7.
Find the smallest number by which 3645 should be divided so that quotient is a perfect cube.
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 8

Question 8.
If p = \(\frac{-3}{5}\), q = \(\frac{1}{2}\), r= \(\frac{-7}{9}\),then verify p × (q + r) = p × q + p × r.
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 9
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 10

Question 9.
Find the square root of 7056 by prime factorisation method.
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 11

Question 10.
Find the least number which must be added to 59000 to make it a perfect square.
Solution:
ML Aggarwal Class 8 Solutions for ICSE Maths Model Question Paper 1 12

ML Aggarwal Class 8 Solutions for ICSE Maths