Use estimation to determine which calculation is incorrect.
-Choose:
A) 
B) 
C) 
D) 
Correct Answer:
Verified
Q82: Add
-49 hours +28 hours +99 hours
A) 186
Q83: Add
-9900 square meters +400 square meters +77
Q84: Add Q85: Use estimation to determine which calculation is Q86: Use estimation to determine which calculation is Q88: Use estimation to determine which calculation is Q89: Use estimation to determine which calculation is Q90: Use estimation to determine which calculation is Q91: Use estimation to determine which calculation is Q92: Use estimation to determine which calculation is
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