Estimate the product 3 2/3 - 8 4/16=?

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Oddman answered
As a rough estimate, you can say the product (result of multiplication) is about 4 times 8, or 32.

As a closer estimate, you can say it is about
  (3 1/2)*(8 1/2) ≈ 3*8 + (1/2)*(3+8) = 29 1/2 _____
The actual product of these numbers is 30 1/4.

The difference of these numbers, which is what the given expression appears to represent, is -4 7/12. Using the above approximations of the numbers involved, the difference might be estimated as -4 or -5.

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