Model QuestionÂ **Paper-1 Class-8 ML Aggarwal** ICSE Mathematics Solutions. APC Understanding Mathematics for ICSE Class-8 Model Question Paper-1 Solutions based on Chapter-1 to 4. Visit official Website **CISCEÂ **for detail information about ICSE Board Class-8 Mathematics.

## Model QuestionÂ **Paper-1 Class-8 ML Aggarwal**Â ICSE Mathematics Solutions

( based on chapter-1 to 4)

Time Allowed-1 hour

max mark-25

**Note**

- Questions 1-2 carry 1 mark each
- Questions 3-5 carry 2 marks each
- Questions 6-8 carry 3 marks each
- Questions 9-10 carry 4 marks each.

**Paper-1 Class-8 ML Aggarwal**

**Choose the correct answer from the given four options (1-2):**

Question 1.

Sum of rational numberÂ and its additive inverse is

(a) 1

(b) 0

(c) -1

(d) none of these

#### Answer

Sum of Â and its additive inverse.

Question 2.

Product of two rational numbers is 1. If oneof them isÂ , then other is

#### Answer

Product of two rational numbers = 1

One number =Â , then second number

Question 3.

Find the value of x for whichÂ Â =Â .

#### Answer

Comparing, we get

2x + 1 = 3

â‡’ 2x = 3 â€“ 1 = 2

â‡’ x =Â

âˆ´ x = 1

Question 4.

Express the following numbers in standard form:

(i) 0.0000000000578

(ii) 345700000000000

#### Answer

(i) 0.0000000000578 = 5.78 Ã— 10^{-11}

(ii) 345700000000000 = 3.457 Ã— 10^{14}

^{Question 5.
Insert ten rational numbers betweenÂ Â andÂ .
}

#### Answer

^{
Ten rational numbers betweenÂ Â andÂ
LCM of 5, 3 = 15
We take any 10 rational numbers among these.}

^{Question 6.
Find the cube root of 50653.
}

#### Answer

^{
Cube root of 50653
}

^{Question 7.
Find the smallest number by which 3645 should be divided so that quotient is a perfect cube.
}

#### Answer

^{
3645
Factorising it we get
3645 = 3 Ã— 3 Ã— 3 Ã— 3 Ã— 3 Ã— 3 Ã— 5
Grouping the same kind of factors in 3â€™s,
we find that one factor 5 is left ungrouped.
So, dividing 3645 by 5, we get 729 which is a perfect cube
and its cube root is 3 Ã— 3 = 9}

Question 8.

If p =Â , q =Â , r=Â ,then verify p Ã— (q + r) = p Ã— q + p Ã— r.

#### Answer

Hence proved L.H.S. = R.H.S.

Question 9.

Find the square root of 7056 by prime factorisation method.

#### Answer

Square root of 7056 =Â

Question 10.

Find the least number which must be added to 59000 to make it a perfect square.

#### Answer

59000

Taking the square root of 59000 by division method we find that

(242)^{2}Â < 59000 < (243)^{2}

By adding 1449 â€“ 1400 = 49

We shall get a perfect square 59049 and its square root = 243

â€“ : End of Model Question** Paper-1 ****Class-8 ML AggarwalÂ **Solutions Â :â€“

Return toÂ **â€“Â Â Â ML AggarwalÂ Maths Solutions for ICSE Class -8**

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