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Question

Simplify the following:
(i) 103 × 90 + 33 × 2 + 70
(ii) 63 × 70 + (-3)4 – 90

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Solution

(i) 103 × 90 + 33 × 2 + 70
= 1000 + 54 + 1
= 1055

(ii) 63 × 70 + (-3)4 – 90
= 216 × 1 + 81 – 1
= 216 + 80
= 296

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