NCERT Exemplar Class 6 Maths Number System Solution: NCERT Exemplar Solution Class 6 Maths Chapter 1 Number System Full Explanation. NCERT Exemplar Class 6 Maths – Chapter 1 Number System. NCERT Exemplar Class 6 Maths Number System Solution by Expert.
NCERT Exemplar Class 6 Maths Number System Solution
In questions 1 to 38, out of the four options, only one is correct. Write the correct answer.
Question 1:
The product of the place values of two 2’s in 428721 is
(A) 4
(B) 40000
(C) 400000
(D) 40000000
Solution: (C) 400000
Product Place of 2”S = 20,000 × 20
= 4,00,000
Question 2:
3 × 10000 + 7 × 1000 + 9 × 100 + 0 ×10 + 4 is the same as
(A) 3794
(B) 37940
(C) 37904
(D) 379409
Solution: (C) 37904
= 3 × 10000 + 7 × 1000 + 9 × 100 + 0 × 10 + 4
= 30000 + 7000 + 900 + 0 + 4
= 37904
Question 3:
If 1 is added to the greatest 7- digit number, it will be equal to
(A) 10 thousand
(B) 1 lakh
(C) 10 lakh
(D) 1 crore
Solution: (D) 1 crore
= Greatest 7 – digit number.
= 9999999 + 1
= 10000000 = 1 Crore.
Question 4:
The expanded form of the number 9578 is
(A) 9 × 10000 + 5 × 1000 + 7 × 10 + 8 × 1
(B) 9 × 1000 + 5 × 100 + 7 × 10 + 8 × 1
(C) 9 × 1000 + 57 × 10 + 8 × 1
(D) 9 × 100 + 5 × 100 + 7 × 10 + 8 × 1
Solution: (B) 9 × 1000 + 5 × 100 + 7 × 10 + 8 × 1
= 9 × 10000 + 5 × 100 + 7 × 10 + 8 × 1
= 9000 + 500+ 70 + 8
= 9578
Question 5:
When rounded off to nearest thousands, the number 85642 is
(A) 85600
(B) 85700
(C) 85000
(D) 86000
Solution: (D) 86000
= 85642 is nearest to 86000.
Question 6:
The largest 4-digit number, using any one digit twice, from digits 5, 9, 2 and 6 is
(A) 9652
(B) 9562
(C) 9659
(D) 9965
Solution: (D) 9965
= In these we use 9 is twice and the largest 4 – digit number is option is 9965.
Question 7:
In Indian System of Numeration, the number 58695376 is written as
(A) 58,69, 53, 76
(B) 58,695,376
(C) 5,86,95,376
(D) 586,95,376
Solution: (C) 5,86,95,376
= In Indian system of numeration we wrote 58695376 as 5,86,95,376
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