00:00 Identify which of the following answers is correct
00:03 Insert each of the potential answers into the expression in order to verify which of them is correct
00:07 Use vertical addition to calculate the problem
00:12 Insert one of the answers into the expression and proceed to calculate
00:24 We can see that the first option doesn't fit, let's move on to the second one
00:28 Let’s apply the same method as before and proceed to check
00:36 Insert one of the answers into the expression and calculate
00:53 We can see that the second option doesn't fit, let's move on to the third one:
00:57 Once again apply the same method as before and proceed to check
01:01 Insert one of the remaining answers into the expression and calculate
01:19 We can see that the third option doesn't fit, let's move on to the fourth one:
01:27 Apply the same method as before and proceed to check
01:33 Insert the remaining answer into the expression and proceed to calculate
01:44 We can see that the fourth option fits
01:49 This is the solution