So for this problem we are looking for a sum (total). So first we are going to round 25.65 to 25.7 and round 14.23 to 14.2
Now we are going to add 25.7 and 14.2 to get a total of 39.9
Ethan rode 39.9 kilometers.
it would be 40000000 because there there are 7 zeroes and then you and then you multiply the two twos together and then put it in the front.
1 5/10 meters is equivalent