Page 182 - Maths Class 04

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Chapter-1 Large Numbers
Practice 1.1
1. a. 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316
b. 727, 728, 729, 730, 731, 732, 733, 734, 735, 736, 737, 738
2. a. 791 b. 806 c. 554 d. 349
3. a. 400+60 b. 900+20+4 c. 500+30 d. 700+9 e. 600+50+8 f. 800+80+8
g. 800+60+4 h. 900+40+2 4. a. 789 b. 865 c. 909
d. 993 e. 842 f. 6233 g. 943 h. 4324
5. a. 99 b. 100 c. 999 d. 1000
6. a. ii b. ii c. ii d. i
7. a. Predecessor = 7122 b. Predecessor = 6279 c. Predecessor = 2747
Successor = 7124 Successor = 6281 Successor = 2749
d. Predecessor = 3359 e. Predecessor = 4022 f. Predecessor = 1995
Successor = 3361 Successor = 4024 Successor = 1997
8. a. Even Numbers = 4628, 7144, 3926 b. Even Numbers = 6000, 7152
Odd Numbers = 2371, 5365 Odd Numbers = 8143, 6233, 4519
c. Even Numbers = 1116, 2222, 4868
Odd Numbers = 3167, 3781
9. There are 24 ways to write 4-digit numbers using the digits 2, 5, 6 and 9. They are :
2569, 2596, 2659, 2695, 2956, 2965, 5269, 5296, 5629, 5692, 5962, 5926
6259, 6295, 6529, 6592, 6925, 6952, 9256, 9265, 9526, 9562, 9625, 9652
Largest Number = 9652, Smallest Number = 2569
Practice 1.2
1. a. b. c.

TTh Th H T O TTh Th H T O TTh Th H T O

2. T Th Th H T O 3. a. Forty-one thousand nine hundred twenty-five
a. 3 5 4 1 4 b. Eight hundred seventy-four
b. 7 6 8 3 c. Three thousand two hundred six
c. 1 8 7 3 2 d. Nine thousand fifty-two
d. 7 5 9 2 9 e. Eighty-one thousand five hundred sixty-eight
e. 4 3 8 8 6 f. Two thousand one hundred seventy-nine
f. 5 2 6 7 8 g. Forty-two thousand five hundred seventy-six
g. 5 0 0 0 h. Eighty thousand nine hundred one
h. 9 5 2 5 0 i. Three thousand four hundred seven
4. a. 74220 b. 7906 c. 91701 d. 58304
5. a. 300 b. 6 c. 4000 d. 100
e. 40000 f. 80 g. 3000 h. 600
6. a. 8 ten thousands + 7 thousands + 9 hundreds + 4 tens + 2 ones
b. 7 ten thousands + 8 thousands + 4 hundreds + 9 tens + 3 ones
c. 9 ten thousands + 2 thousands + 2 hundreds + 4 tens + 5 ones
d. 3 ten thousands + 2 thousands + 4 hundreds + 1 ten + 6 ones
7. a. 7 × 10000 + 9 × 1000 + 2 × 100 + 1 × 10 + 4
b. 8 × 10000 + 4 × 1000 + 5 × 100 + 6 × 10 + 4
c. 7 × 10000 + 5 × 1000 + 2 × 100 + 9 × 10
d. 4 × 10000 + 9 × 1000 + 4 × 100 + 3 × 10 + 2
8. a. 25432 b. 69507 c. 10564 d. 32120 e. 40075

Mathematics-4 182