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Question

Alan wants to estimate the answer for 137 + 12

Which of the following is the best estimation?

(1) 130 + 12

(2) 132 + 12

(3) 140 + 12

(4) 142 + 12

 

Answer given is 2. I thought it should be 3.

Answer

Both the numbers should be rounded off, so it should be 140 + 10. I think there is an error with the options of the question.

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