Question

A family of beavers gnawed down 385 trees one year, 344 trees the next year, and 272 trees the next year. Estimate the number of trees that the family gnawed down in those three years by rounding to the nearest ten first and then adding the rounded numbers.

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Answer 1

To estimate the number of trees gnawed down by a family of beavers in three years, round the numbers of trees to the nearest ten and sum them up: 390 (from 385), 340 (from 344), and 270 (from 272). This gives an estimated total of 1000 trees.

Step-by-step explanation:

To estimate the number of trees a family of beavers gnawed down over three years, we round the numbers to the nearest ten and then sum them up. The first year they gnawed down 385 trees, which rounds to 390 when rounded to the nearest ten. The second year they gnawed down 344 trees, which rounds to 340. The third year, they gnawed down 272 trees, which rounds to 270.

Next, we add these rounded numbers to get the estimated total:

• 390 (rounded from 385)
• 340 (rounded from 344)
• 270 (rounded from 272)

Adding these together:

390 + 340 + 270 = 1000

Therefore, the estimated total number of trees gnawed down by the beaver family in those three years is 1000 trees.