Question

Conor is trying to calculate 85 x 217 but he has an incorrect answer.

By rounding each number to 1 significant figure, find an estimate for the correct answer.

Answer 1

The estimated product is 18000 and the actual product of 85 and 217 is 18,445.

What is the value?

To estimate the product of 85 and 217 by rounding each number to 1 significant figure, you would round each number to its first digit.

For 85, the first digit is 90

For 217, the first digit is 200.

Now, multiply these rounded numbers:

90 x 200

= 18000

So, the estimated product is 18000. This is a rough approximation, and the actual product of 85 and 217 is 18,445.