Question

The school library has 284 science books and 268 social sciences books. Estimate the difference in the number of books by rounding off to the nearest tens.

• A. 10
• B. 20
• C. 5
• D. 0.0

Answer 1

The correct option is D 0.0

Rounding off the number of books to the nearest tens, we get
estimate of 284 = 280
estimate of 268 = 270

Difference = 280 - 270 = 10

Therefore, the estimated difference in the number of books is 10.