Question

While running errands, Tim drove the following distances: 1.3 km to the post office, 3.87 km to the grocery store, 4.0 km to the laundromat, and 2.15 km home. Using the rules for significant digits, which of the following is the correct total distance travelled?

Answer 1

The total distance travelled is:

$1.3 + 3.87 + 4.0 + 2.15 = 11.32.$

So, using the rules for significant digits the total distant travelled is 11.32 km.