Question -
Answer -
(a) 439 + 334 + 4317
Rounding off to nearest hundreds
439 + 334 + 4317 = 400 + 300 + 4300
= 5000
Rounding off to nearest tens
439 + 334 + 4317 = 440 + 330 + 4320
= 5090
(b) 108734 тАУ 47599
Rounding off to nearest hundreds
108734 тАУ 47599 = 108700 тАУ 47600
= 61100
Rounding off to nearest tens
108734 тАУ 47599 = 108730 тАУ 47600
= 61130
(c) 8325 тАУ 491
Rounding off to nearest hundreds
8325 тАУ 491 = 8300 тАУ 500
= 7800
Rounding off to nearest tens
8325 тАУ 491 = 8330 тАУ 490
= 7840
(d) 489348 тАУ 48365
Rounding off to nearest hundreds
489348 тАУ 48365 = 489300 тАУ 48400
= 440900
Rounding off to nearest tens
489348 тАУ 48365 = 489350 тАУ 48370
= 440980
Four more examples are as follows
(i) 4853 + 662
Rounding off to nearest hundreds
4853 + 662 = 4800 + 700
= 5500
Rounding off to nearest tens
4853 + 662 = 4850 + 660
= 5510
(ii) 775 тАУ 390
Rounding off to nearest hundreds
775 тАУ 390 = 800 тАУ 400
= 400
Rounding off to nearest tens
775 тАУ 390 = 780 тАУ 400
= 380
(iii) 6375 тАУ 2875
Rounding off to nearest hundreds
6375 тАУ 2875 = 6400 тАУ 2900
= 3500
Rounding off to nearest tens
6375 тАУ 2875 = 6380 тАУ 2880
= 3500
(iv) 8246 тАУ 6312
Rounding off to nearest hundreds
8246 тАУ 6312 = 8200 тАУ 6300
= 1900
Rounding off to nearest tens
8246 тАУ 6312 = 8240 тАУ 6310
= 1930