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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