Question

Calculate 3217. km + 13.1 km + 1.30 km. round off if necessary to apply the rule of significant figures for addition and subtraction of data numbers. 1. 3231. km 2. 3200. km 3. 3231.4 km 4. 3231.40 km 5. 3230. km

Answer 1

3217 + 13.1 + 1.3 can also be written as

3217.0
+ 13.1
     1.3
----------
3231.4

Your final answer should be 3231.4 or option 4. Hope this helps!