S Chand ICSE Mathematics Class 6 Solution First Chapter Numbers Exercise 1D (O.P. Malhotra, S.K. Gupta, Anubhuti Gangal)
Exercise 1 (D)
(1) Read the following numbers in the International system and write in words.
Ans:-Forty-three thousand, six hundred seventy-one
Ans:- Two hundred thirty thousand, fifty-six
Ans:- Sixty-eight million, eight hundred twenty-three thousand, seven hundred sixty-one
Ans:- Five hundred thousand, two
Ans:- One billion, three hundred sixty-nine million, eight hundred sixty-four thousand, two
Ans:- Seventy billion, one hundred twelve million, five thousand, four hundred fifty-eight
(2) Write the following numerals for each of the following numbers.
(i) Four hundred six thousand seven hundred twelve.
(ii) Seven million eight hundred thirteen thousand three hundred.
(iii) Five hundred nine million eight thousands, seven.
(iv) Two billion eighteen million nine hundred one thousand seventeen.
(v) Eighteen billion five hundred nineteen million nine hundred thirteen thousand seven hundred two.
(vi) Thirty-nine billion five hundred thousand forty-eight.
(3) Write the compact numeral for 8000000 + 50000 + 90 + 9 using International system of numeration. Also, write the number name.
Ans:- 8,050,099; Eight million fifty thousand ninety-nine.
(4) Match the contents of column A with those of column B.
|Column A||Column B|
|(i) Two hundred thousand
(ii) Two billion
(iii) Twenty million
(iv) Two million
|(a) Two crore
(b) Twenty lakh
(c) Two hundred crore
(d) Two lakh
Ans:- (i) __(d), (ii) ___ (c), (iii) ___ (a), (iv) ___ (b)
(5) Write down three consecutive whole numbers just preceding 729,001.
Ans:- 728,998; 728,999; 729,000
(6) Write in numerals and words the largest 8-digit numbers having four different digits in
(i) Indian system of numeration
Ans:- 9,99,99,876; Nine crore ninety-nine lakh ninety-nine thousand eight hundred seventy-six.
(ii) International system of numeration
Ans:- 99,999,876; Ninety-nine million nine hundred ninety-nine thousand eight hundred seventy-six.
Multiple Choice Questions (MCQs)
(7) The smallest 8-digit number using three different digits can be read as
(a) Ten million two
(b) One million two
(c) One hundred million two
(d) One hundred thousand two
Ans:- (a) Ten million two
(8) The number 999,999,998 can be read in the Indian system as:
(a) Nine hundred ninety-nine crore nine hundred ninety-nine thousand nine hundred ninety-eighty.
(b) Ninety-nine crore nine lakh ninety-nine thousand nine hundred ninety-eighty.
(c) Nine crore ninety-nine lakh ninety-nine thousand nine hundred ninety-eight.
(d) Ninety-nine crore ninety-nine lakh ninety-nine thousand nine hundred ninety-eight.
Ans:- (d) Ninety-nine crore ninety-nine lakh ninety-nine thousand nine hundred ninety-eight.