Question

EXERCISE 1D
1. Round each of the following numbers to the nearest ten:
(a) 36
(b) 173
(c) 3869
(d) 16378
2. Round each of the following numbers to the nearest hundred:
(a) 814
(b) 1254
(c) 43126
(d) 98165
3. Round each of the following numbers to the nearest thousand:
(a) 793
(b) 4826
(c) 16719
(d) 28394
4. Round each of the following numbers to the nearest ten thousand:
(a) 17514
(b) 26340
(c) 34890
(d) 272685
Estimate each sum to the nearest ten:
c
07
5. (57 +34)
6. (43 +78)
8. (86 +19)
9. (95 +58)
11. (356 + 275)
12. (463 +182)
Estimate each sum to the nearest hundred:
7. (14 + 69)
10. (77 +63)
13. (538 +276)
14. (236 +689)
15. (458 +324)
16. (170 +395)​

Answer 1

Answer:

1.c

2.c

3.c

4.c

5.5

6.13

Answer 2

1)A)40

b)180

c)3870

d)16380

2)a)800

b)1300

c)43100

d)98200

3)a)1000

b)5000

c)16000

d)2800