Q. 1785.0( 1 Vote )
Estimate each of the following by rounding off each number to nearest tens
(a) 11963 – 9369
(b) 76877 – 7783
(c) 10732 – 4354
(d) 78203 – 16407
Answer :
(a) Rounding off 11963 to nearest tens = 11960
Rounding of 9369 to nearest tens = 9370
11960 - 9370 = 2590
(b) Rounding off 76877 to nearest tens = 76880
Rounding of 7783 to nearest tens = 7780
76880 - 7780 = 69100
(c) Rounding off 10732 to nearest tens = 10730
Rounding of 4354 to nearest tens = 4350
10730 - 4350 = 6380
(d) Rounding off 78203 to nearest tens = 78200
Rounding of 16470 to nearest tens = 16410
78200 - 16410 = 61790
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Estimated sum of 7826 and 12469 rounded off to hundreds is 20, 000.
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