Knowing Our Numbers-Solutions Ex-1.1

CBSE Class –VI Mathematics
NCERT Solutions
Chapter 1 Knowing Our Numbers (Ex. 1.1)

Question 1. Fill in the blanks:
(a) 1 lakh = _______________ ten thousand
(b) 1 million = _______________ hundred thousand
(c) 1 crore = _______________ ten lakh
(d) 1 crore = _______________ million
(e) 1 million = _______________ lakh
Answer:  (a) 10
(b) 10
(c) 10
(d) 10
(e) 10
Question 2. Place commas correctly and write the numerals:
(a) Seventy three lakh seventy five thousand three hundred seven.
(b) Nine crore five lakh forty one.
(c) Seven crore fifty two lakh twenty one thousand three hundred two.
(d) Fifty eight million four hundred twenty three thousand two hundred two.
(e) Twenty three lakh thirty thousand ten.
Answer: (a) 73,75,307
(b) 9,05,00,041
(c) 7,52,21,302
(d) 58,423,202
(e) 23,30,010
Question 3. Insert commas suitably and write the names according to Indian system of numeration:
(a) 87595762
(b) 8546283
(c) 99900046
(d) 98432701
Answer: (a) 8,75,95,762  Eight crore seventy five lakh ninety five thousand seven hundred sixty two
(b) 85,46,283  Eighty five lakh forty six thousand two hundred eighty three
(c) 9,99,00,046  Nine crore ninety nine lakh forty six
(d ) 9,84,32,701  Nine crore eighty four lakh thirty two thousand seven hundred one
Question 4. Insert commas suitably and write the names according to International system of numeration:
(a) 78921092
(b) 7452283
(c) 99985102
(d) 48049831
Answer: (a) 78,921,092  Seventy eight million nine hundred twenty one thousand ninety two
(b) 7,452,283  Seven million four hundred fifty two thousand two hundred eighty three
(c) 99,985,102  Ninety nine million nine hundred eighty five thousand one hundred two
(d) 48,049,831  Forty eight million forty-nine thousand eight hundred thirty one