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Nathan is building a tree house. he needs wooden boards that are 16.45 feet, 7.3 feet, and 12.8 feet in length.

Nathan needs to make sure he buys enough wood to finish the project. What is the closest estimate of the total length, in feet, he needs?

30
35
38
40

1 answer

To estimate the total length of the wooden boards Nathan needs, we can round each length to the nearest whole number and then add those estimates together.

  1. For 16.45 feet, we round to 16 feet.
  2. For 7.3 feet, we round to 7 feet.
  3. For 12.8 feet, we round to 13 feet.

Now, we add the rounded lengths together:

\( 16 + 7 + 13 = 36 \) feet.

The closest estimate from the provided options (30, 35, 38, 40) is 35 feet.