# S Chand ICSE Mathematics Class 6 Solution First Chapter Numbers Exercise 1C (O.P. Malhotra,  S.K. Gupta, Anubhuti Gangal)

Exercise 1 (C)

(1) Read and write down in words the following numbers in Indian system.

(i) 18,00,808

Ans:- Eighteen lakh eight hundred eight

(ii) 12,36,748

Ans:- Twelve lakh thirty-six thousand seven hundred forty-eight

(iii) 8,30,09,007

Ans:- Eight crore thirty lakh nine thousand seven

(iv) 10,00,30,004

Ans:- Ten crore thirty thousand four.

(2) Express in numerals.

(i) Six lakh three thousand seven hundred eighty-five

Ans:- 6,03,785

(ii) Eighty lakh fifteen thousand two hundred five.

Ans:- 80,15,205

(iii) Thirty crore seven lakh nine thousand four hundred two.

Ans:- 30,07,09,402

(iv) Eight crore five thousand six.

Ans:- 8,00,05,006

(v) Sixty-one crore twenty-five thousand four hundred six.

Ans:- 61,00,25,406

(3)  State the place value of

(i) 8 in 287

Ans:- 80

(ii) 7 in 7002

Ans:- 7000

(iii) 0 on 7,08,23,431

Ans:- 0

(iv) 9 in 17,87,93,510

Ans:- 90,000

(v) 3 in 3,14,56,007

Ans:- 3,00,00,000

(4) Find the difference between the place values of

(i) 6 in 6,15,265

Ans:- 5,99,940

(ii) 3 in 3,47,13,671

Ans:- 2,99,97,000

(iii) 5 in 95,23,165

Ans:- 4,99,995

(iv) 4 in 8,36,45,241

Ans:- 39,960

(5) Express each of the following numbers in expanded form.

(i) 523

Ans:- 5 x 100 + 2 x 10 + 3 x 1

(ii) 6,348

Ans:- 6 x 1000 + 3 x 100 + 4 x 10 + 8 x 1

(iii) 9,50,842

Ans:- 9 x 100000 + 5 x 10000 + 8 x 100 + 4 x 10 + 2 x 1

(iv) 8,26,05,943

Ans:-8 x 10000000 + 2 x 1000000 + 6 x 100000 + 5 x 1000 + 9 x 100 + 4 x 10 + 3 x 1

(6) Write the numbers whose expanded forms are given below.

(i) (5 x 10000) + (7 x 1000) + (8 x 100) + (1 x 10) + (6 x 1)

Ans:- 57,876

(ii) (7 x 100000) + 99 x 10000) + (0 x 1000) + (6 x 100) + (2 x 10) + (8 x 1)

Ans:- 7,90,628

(iii) 60,00,000 + 40, 000 + 2000 + 100  + 7

Ans:- 60,42,107

(7) Compare each of the following pairs by putting <,> in the box.

(i) 16,23,168  ___  6,63,516

Ans:- >

(ii) 16,43,17,345 ___ 16,43,17,453

Ans:- <

(iii) 30,17,894 ___ 4,29,17,894

Ans:- <

(iv) 86,60,000 ___ 86,59,999

Ans:- >

(8) Rearrange the numbers in each part the largest to the smallest.

(i) 17,800 ; 17,903 ; 17, 308 ; 17,400

Ans:- 17,903 ; 17,800 ; 17, 400 ; 17,308

(ii) 5,90,672 ; 5,09,762 ; 7,95,072 ; 9,07,652

Ans:- 9,07,652 ; 7,95,072 ; 5,90,672 ; 5,09,762

(iii) 60,09,320 ; 9,00,00,013 ; 89,79,561 ; 9,00,00,031

Ans:- 9,00,00031 ; 9,00,00,013 ; 89,79,561 ; 60,09,320

Multiple Choice Question (MCQ)

(9) The number, whose expanded form is 60,00,000 + 40,000 + 2000 + 100 + 7 in words is

(a) Six lakh forty-two thousand one hundred seven.

(b) Sixty lakh forty-two thousand one hundred seven.

(c) Sixty-four lakh two thousand one hundred seven.

(d) Sixty lakh-two thousand one hundred seven.

Ans:- (d) Sixty lakh-two thousand one hundred seven.

Challenges!

(10) (i) Write the smallest 8-digit odd number using all odd digits.

Ans:- 11113579

(ii) Write the above number in words in Indian system

Ans:- One crore eleven lakh thirteen thousand five hundred seventy-nine.

(iii) Write the successor of this number in the expanded form.

Ans:- 1,11,13,580=1,00,00,000 + 10,00,000 + 1,00,000 + 10,000 + 3000 + 500 + 80

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Updated: June 6, 2019 — 12:26 pm