First, use front end rounding to estimate each answer. Then find the exact answer.A truck weights 9110 pounds when empty and 21,329 pounds when loaded. What is the weight of the load?
A. estimate: 20,000 - 9000 = 11,000 pounds; exact: 12,219 pounds
B. estimate: 20,000 - 9100 = 10,900 pounds; exact: 12,219 pounds
C. estimate: 21,000 - 9100 = 11,900 pounds; exact: 12,219 pounds
D. estimate: 21,000 - 9000 = 12,000 pounds; exact: 12,219 pounds
Answer: A
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A. 
B. 
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