Page 179 - Maths Skill - 3

177

Answers

CHAPTER - 1: THE BEGINNING OF COUNTING

Boot-up
9 = |||| ||||, 12 = |||| |||| ||, 15 = |||| |||| ||||

CHAPTER - 2: 4-DIGIT NUMBERS

Boot-up
605, 130, 2-friends; Four Hundred Thirty-two; Two hundred ten; Six Hundred Ninety-one; 691; 210; 210 > 432 > 691

Exercise 2.1
1. (a) 1000, 1001, 1002, 1003, 1004, 1005, 1006, 1007, 1008 (b) 2567, 2568, 2569, 2570, 2571, 2572, 2573, 2574, 2575
(c) 7540, 7541, 7542, 7543, 7544, 7545, 7546, 7547, 7548 (d) 8835, 8836 , 8837 , 8838 , 8839 , 8840 , 8841 , 8842 , 8843
2. (a) 9942 (b) 2022 (c) 5654 (d) 7299
3. (a) Seven thousand two hundred fourteen (b) Three thousand six hundred fifteen
(c) Eight thousand six (d) Five thousand five hundred fifty-five

Exercise 2.2
1. (a) (b) (c) 2. (a) 1347 (b) 7251 (c) 5721

Th H T O Th H T O Th H T O
1 0 3 0 8 3 7 5 5 5 0 3

Exercise 2.3
1. (a) Th H T O (b) Th H T O
7 0 5 1 Place value Face value 6 2 3 3 Place value Face value
1 × 1 = 1 1 3 × 1 = 3 3
5 × 10 = 50 5 3 × 10 = 30 3
0 × 100 = 0 0 2 × 100 = 200 2
7 × 1000 = 7000 7 6 × 1000 = 6000 6

2. (a) 60 (b) 900 (c) 300 (d) 30 (e) 3000 (f) 5
Exercise 2.4

1. (a) 6000 + 300 + 40 + 2 (b) 2000 + 100 + 0 + 8 (c) 9000 + 100 + 20 + 6
2. (a) 3408 (b) 2355 (c) 4012
Exercise 2.5
1. (a) < (b) < (c) < (d) = (e) > (f) <
2. (a) 5364 (b) 2651 (c) 9691 (d) 4265 (e) 8449 (f) 3554
3. (a) 4067 (b) 7129 (c) 4567 (d) 4032 (e) 4298 (f) 4201