NCERT Class 6 Maths Chapter 1 Knowing our Numbers Exercise 1.1

Chapter 1 Knowing our Numbers Exercise 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) 1 lakh = 10 ten thousand.
b) 1 million = 10 hundred thousand.
c) 1 crore = 10 ten lakh.
d) 1 crore = 10 million.
e) 1 million = 10 lakh.

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 lakhs ninety five thousand seven hundred sixty two
b) 85,46,283 - Eighty five lakhs forty six thousand two hundred eighty three
c) 9,99,00,046 - Nine crore ninety nine lakhs 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

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