Page 212 - ICSE Math 4

(c) Th H T O Expanded form Th H T O 5. (a) 46,900 (b) 9,000
6 8 4 5 6000 + 800 + 40 + 5 8 0 0 0 6. (a) ` 16,000 (b) 12,000 (c) ` 5,000
+ 2 9 3 0 + 2000 + 900 + 30 + 0 1 7 0 0 7. (a) 7,785 tress (b) ` 17,625 (c) ` 15,570
9 7 7 5 8000 + 1700 + 70 + 5 7 0 (d) 8,891 (e) 3,056 books
8. (a) 15,710 (b) 7,320
+ 5
9 7 7 5 Values and Life Skills
(d) Th H T O Expanded form Th H T O 3,886 students
3 6 2 0 3000 + 600 + 20 + 0 5 0 0 0 Progress Worksheet
+ 2 0 4 8 + 2000 + 0 + 40 + 8 6 0 0 1. Students to do on their own.
5000 + 600 + 60 + 8 6 0 2. (a) (ii) (b) (iii) (c) (iv) (d) (v) (e) (i)
+ 8 3. (a) 3,317 (b) 4,050 (c) 6,087
5 6 6 8 4. (a) Th H T O (b) Th H T O (c) Th H T O
2. (a) Th H T O (b) Th H T O 2 6 7 0 5 7 9 4 1 9 9 8
4 5 6 3 2 4 5 2 + 8 2 3 4 + 1 4 5 9 + 9 9 9 9
+ 2 6 3 8 + 4 7 9 6 1 0 9 0 4 7 2 5 3 1 1 9 9 7
7 2 0 1 7 2 4 8
5. (a) ` 16,620 (b) ` 11,155 (c) 5,200 votes
3. (a) 6,380 (b) 9,600 (c) 10,000
4. Actual sum = 5,821; Es mated sum = 5,800 Chapter 4: Subtrac on
Exercise 3.4
Exercise 4.1
1. (a) 999 roses (b) 1,014 (c) 4,215 packets
1. (a) 5,662 (b) 2,335 (c) 9,243 (d) 2,031 (e) 1,415
(d) 8,503 people (e) 8,936 oranges (f) 2,122 (g) 4,503 (h) 2,182 (i) 3,513
2. (a) 4,990 (b) 5,271
2. (a) 2,114 (b) 3,431 (c) 3,321
Review Exercise (d) 3,643 (e) 1,224 (f) 2,332
1. (a) 5,598 (b) 9,865 (c) 9,913 (d) 6,889
Exercise 4.2
(e) 7,532 (f) 8,974 (g) 9,539 (h) 9,283
1. (a) 2,277 (b) 8,239 (c) 7,105 (d) 2,272 (e) 4,078
2. (a) Th H T O Expanded form Th H T O
4 6 2 1 4000 + 600 + 20 + 1 8 0 0 0 (f) 1,144 (g) 1,479 (h) 2,309 (i) 2,417
2. (a) 1,238 (b) 3,927 (c) 3,327
+ 4 6 6 6 + 4000 + 600 + 60 + 6 1 2 0 0
(d) 4,094 (e) 3,198 (f) 5,674
8000 + 1200 + 80 + 7 8 0
Exercise 4.3
+ 7
1. (a) 3,432 (b) 1,111 (c) 1,218
9 2 8 7
2. (a) 2,110 (b) 2,202 (c) 2,921 (d) 7,922
(b) Th H T O Expanded form Th H T O
1 0 0 2 1000 + 0 + 0 + 2 9 0 0 0 3. (a) Th H T O (b) Th H T O (c) Th H T O
5 1 3 6 8 7 9 8 7 4 3 6
+ 8 7 7 9 + 8000 + 700 + 70 + 9 7 0 0
– 2 1 1 4 – 2 5 6 5 – 2 2 4 9
9000 + 700 + 70 + 11 7 0
3 0 2 2 6 2 3 3 5 1 8 7
+ 1 1
9 7 8 1 4. (a) Actual value: 2,441; Es mated value: 2,000
(b) Actual value: 3,263; Es mated value: 3,000
(c) Th H T O Expanded form Th H T O (c) Actual value: 2,924; Es mated value: 3,000
2 6 5 8 2000 + 600 + 50 + 8 7 0 0 0
(d) Actual value: 1,345; Es mated value: 1,000
+ 5 5 6 7 + 5000 + 500 + 60 + 7 1 1 0 0
Exercise 4.4
7000 + 1100 + 110 + 15 1 1 0
1. (a) 201 (b) Library B; 509 (c) 4,056
+ 1 5
(d) 86 kg (e) 1,136 2. (a) 1,937 (b) 5,435
8 2 2 5
3. (a) 744 (b) 291 (c) 4,218 (d) 7,415
3. (a) 703 (b) 0 (c) 10 (d) 6,117 (e) 100 (f) 10
Review Exercise
4. (a) Th H T O (b) Th H T O
1. (a) 221 (b) 229 (c) 6,235 (d) 4,728
7 4 9 3 2 1 8 9
(e) 4,825 (f) 1,947
+ 2 4 6 0 + 7 2 1 8 2. (a) 1,696 (b) 2,069 (c) 1,367 (d) 1,996
9 9 5 3 9 4 0 7 3. (a) 5,149 (b) 451

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