Question 41: Apply properties of addition and multiplication to quickly calculate: 72 + 69 + 128
72 + 69 + 128
= (72 + 128) + 69
= 200 + 69
= 269
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Question 41: Apply properties of addition and multiplication to quickly calculate: 72 + 69 + 128
72 + 69 + 128
= (72 + 128) + 69
= 200 + 69
= 269
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