Page 198 - Math Skill - 5

Answers

CHAPTER - 1: LARGE NUMBERS

Boot-up 1. (a) 26,986 (b) 20000 + 6000 + 900 + 80 + 6 (c) Twenty-six thousand nine hundred eighty-six

Exercise 1.1
1. (a) 72,37,479 (b) 37,28,272 (c) 5,39,27,217
2. (a) Seventy-two lakh, thirty-eight thousand, six hundred eighteen
(b) Sixty-seven lakh, eighty-one thousand, two hundred eighty-five

(c) Thirty-eight lakh, fifty-two thousand, nine hundred six
(d) Two crore, six lakh, six hundred twelve
(e) Two crore, seventy-four lakh, thirty-eight thousand, sixteen
(f) Forty-three crore, eleven lakh, sixty-four thousand, six
3. (a) 3,83,528 (b) 78,31,806 (c) 78,83,806 (d) 78,51,287
(e) 6,67,83,520 (f) 7,51,28,367 (g) 2,28,35,129 (h) 41,21,097

Exercise 1.2

1. MILLIONS THOUSANDS ONES
Hundred Ten Millions Hundred Ten Thousands Hundreds Tens Ones
Millions Millions Thousands Thousands

(a) 6 8 9 3 5 2 6
(b) 7 1 5 2 8 6 1 0
(c) 6 7 8 9 3 8 2 8
(d) 3 2 1 0 7 7 8 6 1

2. (a) 5,123,618 (b) 81987169 (c) 71,289,369 (d) 783,693,607
3. (a) 56,000,000 (b) 25,002,305 (c) 5,002,036 (d) 62,000,205
4. (a) Seventy-one million, six hundred seventy-two thousand, eight hundred ninety-six
(b) Seventy-six million, one hundred eighty-nine thousand, three hundred sixty-nine
(c) Sixty-seven million, six hundred ninety-three thousand, one hundred sixty-nine
(d) One hundred twenty-three million, four hundred fifty-six thousand, seven hundred eighty-nine

Exercise 1.3
1. (a) Face value = 6; Place value = 60,00,000 (b) Face value = 4; Place value = 4,00,000
(c) Face value = 6; Place value = 6,000 2. (a) 7 (b) 7000 (c) 70000

3. (a) 3,00,000 + 80,000 + 2,000 + 800 + 60 + 5 (b) 70,000 + 8,000 + 300 + 60 + 5
(c) 10,00,00,000 + 2,00,00,000 + 0 + 5,00,000 + 70,000 + 3,000 + 400 + 70 + 1
4. (a) 72,00,816 (b) 47,34,825 (c) 3,79,86,897
Exercise 1.4

1. (a) 32,489 (b) 64,599 (c) 16,009 (d) 69,999 (e) 5,49,799 (f) 3,88,776
2. (a) 26,990 (b) 10,020 (c) 32,479 (d) 63,600 (e) 2,10,790 (f) 6,76,000