Simplify the following without multiplying : (1) 109 X 50 (2) 65 x 102 (3) 102 × 21 (4) 191 + 200 + 109 (5) 20 X 155
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Answer:
109*50=5450
65*102=6630
102*21=2142
191+200+109=500
20*155=3100
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