The fractional part that Alison is still missing is <u>3/10</u>.
<h3>What is a fraction?</h3>
A fraction is a part of an absolute value or number.
Fractions are always less than one.
Fractions are denoted by a numerator (upper part or dividend) less than the denominator (the lower portion known as the divisor).
There are proper and improper fractions.
The fraction found under the coffee table = 3/10
The fraction found under the couch = 4/10
The total fractional part found so far = 7/10 (3/10 + 4/10)
The fractional part that Alison misses = 3/10 (1 - 7/10)
Thus, Alison still misses <u>3/10</u>, which is fractionally 30% of the puzzle pieces.
Learn more about fractions at brainly.com/question/17220365
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