## NCERT Solutions Std 6 Maths Chapter 1 Knowing Our Numbers

**Exercise 1.1**

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.

Answers:

1 lakh = 100000

Ten thousand = 10000

1 lakh = __10__ ten thousand.

b). 1 million = 1000000

1 hundred thousand = 100000.

1 million = __10__ hundred thousand.

c). 1 crore = 10000000

ten lakh = 1000000

1 crore = __10__ ten lakh.

d). 1 crore = 10000000

1 million = 1000000

1 crore = __10__ million.

e). 1 million = 1000000

1 lakh = 100000

1 million = __10__ lakh.

2). Place commas correctly and write the numerals.

a). Seventy three lakh seventy five thousand three hundred seven.

b). Nine crore five lakhs forty one.

c). Seven crore fifty two lakh twenty three thousand two hundred two.

d). Fifty eight million four hundred twenty three thousand two hundred two.

e). twenty three lakh thirty thousand ten.

Answers:

a). Seventy three lakh seventy five thousand three hundred seven.

73, 75, 307

b). Nine crore five lakhs forty one.

9,05,00,041

c). Seven crore fifty two lakh twenty three thousand two hundred two.

7,52,23,202

d). Fifty eight million four hundred twenty three thousand two hundred two.

58,423,202

e). twenty three lakh thirty thousand ten.

23, 30, 010

3). Insert commas suitably and write the names according to the Indian System of Numeration.

a). 87595762 b). 8546283

c). 99900046 d). 98432701

Answers:

a). 87595762 – 8,75,95,762

Eight crore seventy five lakh ninety five thousand seven hundred sixty two

b). 8546283 – 85,46,283

Eighty five lakh forty six thousand two hundred eighty three

c). 99900046 – 9,99,00,046

Nine crores ninety lakh forty six.

d). 98432701 – 9,84,32,701

Nine crore eighty four lakh thirty two thousands seven hundred one.

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

a). 78921092 b). 7452283

c). 99985102 d). 48049831

Answers:

a). 78921092 – 78,921,092

Seventy eight million nine hundred twenty one thousand ninety two

b). 7452283 – 7,452,283

seven million four hundred fifty two thousand two hundred eighty three

c). 99985102 – 99,985,102

ninety nine million nine hundred eighty five thousand one hundred two

d). 48049831 – 48,049,831

forty eight million forty nine thousand eight hundred thirty one

Knowing Our Numbers