Answer:
0.436 ⇒ 0.44
9.000 ⇒ 9.0
Concept:
<u>Significant figures</u> are where each of the digits of a number are used to express it to the required degree of accuracy, starting from the first nonzero digit.
Therefore, in the context of this question, two significant figure means that <u>two digits of numbers are kept</u>, from left to right, starting from the first nonzero digit.
<u>Solve:</u>
<h2>PART I: Rounding 0.436</h2>
0.436 has <u>3 significant digits</u> in total starting from left to right
Thus, the last digit should be rounded up / down
Since the last digit is 6, <u>it is greater than 5</u>, so it should be rounded up.
Therefore, a rounded 0.436 is
<h2>PART II: Rounding 9.000</h2>
9.000 has 4 significant digits in total starting from left to right
Thus, the last two digits should be rounded up / down
Since the last two digits are 0, <u>it is less than 5</u>, so it should be rounded up (or remained).
Therefore, a rounded 9.000 is
Hope this helps!! :)
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