Final answer:
Subtracting 11 from 47 gives us 36. The closest estimate to this difference is 40, which is option (c).
Step-by-step explanation:
The best estimate of the difference between 47 and 11 is to subtract the smaller number (11) from the larger number (47). The difference is obtained by performing the subtraction 47 - 11, which equals 36. To estimate the difference, we look for the closest round number, and in this case, it is 40. Thus, the best estimate of the difference between 47 and 11 would be 40, which relates to option (c). The best estimate of the difference between 47 and 11 is 36. To find the difference, subtract 11 from 47: 47 - 11 = 36. Therefore, option c) 40 is the closest estimate.