Estimate each of the following products by rounding off each number to nearest tens: 

(a) 87 × 32 

(b) 311×113 

(c) 3239 × 28 

(d) 1385 × 789

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1 Answers

(a) 2700 

(b) 34100 

(c) 97200 

(d) 1098100

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