Question

What is the solution to the problem expressed to the correct number of significant figures? 2.13 + 1 = ?

A. 3
B. 3.0
C. 3.1
D. 3.13

Answer 1

3.13

Step-by-step explanation:

Answer 2

So,

With addition, we the last digit we keep will be the one which is known for both individual values.

We know 2.13 to the hundredths, but we only know 1 to the ones. Therefore, we will round off in the ones place.

2.13 + 1 = 3.13 (unrounded)

= 3 (rounded)

Hope this helps!