Question

5. Suppose you use a calculator to find the sum of 362.1 +
42.2 + 35.6 , Your display shows the answer 826.36. Explain
how an estimate could help you to realize that you have made
an error.​

Answer 1

Answer:

You can add the last numbers(1,2,6) after the decimal point.

They add up to 9

But the the last number of the answer given by calculator says 6.

Therefore, by this way you can identify the error