Question

Perform this addition to the correct number of significant figures: 8.34+18.586+0.04

Answer 1

`26.97.\text{ Option }B\text{ is correct}`

Explanations:

Given the sum of decimals expressed as;

`8.34+18.586+0.04`

First, we need to take the sum of the decimals to have:

`\begin{gathered} =8.34+18.586+0.04 \\ =8.34+18.626 \\ =26.966 \end{gathered}`

To get the correct decimal values, we will approximate the answer to the least decimal value in the given question.

From the given question, we can see that the value with the least decimal place is 2d.p. Hence we will convert the answer to 2 decimal places.

29.966 to two decimal places is 26.97. This gives the correct number of significant figures required.