Answer :

(i) 100(100 – 3) – (100 × 100 – 3)


= 100 × 100 - 100 × 3 – 100 × 100 + 3


= - 300 + 3 (cancellation property)


= - 297


(ii) (20 – (2011 – 201) + (2011– (201 – 20))


= 20 - 2011 + 201 + 2011 – 201 + 20


= 40 (cancellation property)


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