One floor of a dollhouse is 1.6 feet tall. The dollhouse contains two levels of living areas and an attic for a total of 2.5 floors. Jaime estimates the height of the dollhouse by computing 2 times 3. How does her estimate compare to the actual height of the dollhouse?
Her estimate is greater than the actual height because both factors were rounded up.
Her estimate is less than the actual height because both factors were rounded up.
Her estimate is greater than the actual height because both factors were rounded down.
Her estimate is less than the actual height because both factors were rounded down.
Answers
Given :- One floor of a dollhouse is 1.6 feet tall. The dollhouse contains two levels of living areas and an attic for a total of 2.5 floors. Jaime estimates the height of the dollhouse by computing 2 times 3. How does her estimate compare to the actual height of the dollhouse ?
A) Her estimate is greater than the actual height because both factors were rounded up.
B) Her estimate is less than the actual height because both factors were rounded up.
C) Her estimate is greater than the actual height because both factors were rounded down.
D) Her estimate is less than the actual height because both factors were rounded down.
Solution :-
given that, one floor of a dollhouse is 1.6 feet tall and the dollhouse contains a total of 2.5 floors.
So,
→ Height of 1 floor = 1.6 feet
Than,
→ Height of 2.5 floors = (1.6 * 2.5) feet
Therefore,
→ Total height of the dollhouse = 1.6 * 2.5 = 4 feet.
Now, given that, Jaime estimates the height of the dollhouse by computing 2 times 3.
So,
→ Height estimated by Jaime = 2 * 3 = 6 feet.
Hence, the actual height is 2 feet less than the estimated height .
∴ Option A) Her estimate is greater than the actual height because both factors were rounded up.