Question

QUESTION 7 10 points The smallest digit of a number is the uncertain digit. For example the number 3 in the number 2.3 is the uncertain digit. So the number 2.3 is known to within a tenth of a unit (because 3 is in the tenth digit) In adding or subtracting numbers, determine which number has the largest uncertainty and round the result of the addition/subtraction to that digit. Example: 36.7+102.45 -139.15-139.2 The reason: Because the largest udcertainty is in the tenth digit (36.7) one must round the result to the tenth digit 0.0342 102 5.47- 97 口ゆ

Answer 1

.0342 + 102 - 5.47 = 96.5642

But 102 is only accurate to the nearest integer, so the answer has to be rounded down to the nearest integer which is 97. Hence the answer is 97.