183.21 + 2.9928 * 66.84 = _______?
Correct answer: A. 383
- A. 383
- B. 372
- C. 380
- D. 374
Explanation
Compute the product using 2.9928 = 3 - 0.0072: 2.9928 x 66.84 = 200.52 - 0.481248 = 200.038752. Adding 183.21 gives 383.248752, which rounds to 383, option a. The likely mistake is choosing c, 380, by rounding 2.9928 to 3 and then rounding the final result down too far.
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