## Class 6 Maths NCERT Knowing Our Numbers Chapter 1 Exercise 1.1

**NCERT Solutions for Class 6 Maths Chapter 1 Knowing Our Numbers ****Exercise 1.1**

**Ex 1.1 Class 6 Maths 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

**Ex 1.1 Class 6 Maths 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.

Solution:

(a) 73,75,307

(b) 9,05,00,041

(c) 7,52,21,302

(d) 5,84,23,202

(e) 23,30,010.

**Ex 1.1 Class 6 Maths 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 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)

**Ex 1.1 Class 6 Maths 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 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)