# NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers Ex 1.1

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## NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers Ex 1.1

NCERT TEXTBOOK EXERCISES

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.

Solution :
(a) 1 lakh = ten ten thousand.
(b) 1 million = ten hundred thousand.
(c) 1 crore = ten ten lakh
(d) 1 crore = ten million
(e) 1 million = ten 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 crores 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.

Solution :
(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.

Solution :
(a)
8, 75, 95, 762. Eight crores seventy-five lakh ninety-five thousand seven hundred and sixty-two.
(b) 85, 46, 283. Eighty-five lakh forty-six thousand two hundred and eighty-three.
(c) i 9, 99, 00, 046. Nine crore ninety-nine lakh and forty-six.
(d) 9, 84, 32, 701. Nine crore eighty-four lakh thirty-two thousand seven hundred and one.

Question 4. Insert commas suitably and write the names according to International System of Numeration :

• (a) 78921092
• (b) 7452283
• (c) 99985102
• (d) 48049831.

Solution :
(a) 78,921,092. Seventy-eight million nine hundred twenty-one thousand and ninety-two.
(b) 7.452,283. Seven million four hundred fifty-two thousand two hundred and eighty-three.
(c) 99. 985. 102. Ninety-nine million nine hundred eighty-five thousand one hundred and two.
(d) 48. 049. 831. Forty-eight million forty-nine thousand eight hundred and thirty-one.

## NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers Ex 1.1 PDF

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