class 6th Chapter 1 [ Exercise 1.1]
1. Fill in the blanks:
(a) 1 lac = ………….. ten thousand.
(b) 1 million = ………… hundred thousand.
(c) 1 crore = ………… ten lac.
(d) 1 crore = ………… million.
(e) 1 million = ………… lac
Solution.
(a) 1 lac =10 ten thousand.
(1 lac = 1, 00, 000)
(b) 1 million = 10 hundred thousand.
(1 million = 1, 000, 000)
(c) 1 crore = 10 ten lac
(1 crore = 1, 00, 00, 000)
(d) 1 crore = 10 million
(1 crore = 1, 00, 00, 000 and 10 million = 10, 000, 000)
(e) 1 million = 10 lac
(1 million = 1, 000, 000)
2.Place commas correctly and write the numerals:
(a) Seventy-three lac seventy-five thousand three hundred seven.
(b) Nine crore five lac forty-one.
(c) Seven crore fifty-two lac twenty-one thousand three hundred two.
(d) Fifty-eight million four hundred twenty- three thousand two hundred two.
(e) Twenty-three lac 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.
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 lac ninety five thousand seven hundred sixty two
(b)85, 46, 283 -Eighty five lac forty six thousand two hundred eighty three
(c) 9, 99, 00, 046 - Nine crore ninety nine lac forty six
(d) 9, 84, 32, 701 - Nine crore eighty four lac thirty two thousand seven hundred one
4.Insert commas suitably and write the names according to International System of Numeration:
(a) 78, 921092
(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 )
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