First sentence: there are two verbs: "Was reading" which is PAST CONTINUOUS tense and "slapped" which is SIMPLE PAST TENSE. Even if the verbs belong to two different tense, both the actions take place in the past, but the first action takes place before the second action, so the Tense Consistency is respected.
Second sentence: there are two verbs: "jumped out" and "started shout", which are both SIMPLE PAST. So the tense consistency is respected.
Third sentence: there are two verbs: the first is "was" which is the SIMPLE PAST of the verb to be, while the second verb is "run", which is the SIMPLE PRESENT of the verb to run. So the Tense Consistency isn't respected. In place of the word RUN, there should be the word RAN ( which is the PAST SIMPLE of the verb run).
Second sentence: there are two verbs: "jumped out" and "started shout", which are both SIMPLE PAST. So the tense consistency is respected.
Third sentence: there are two verbs: the first is "was" which is the SIMPLE PAST of the verb to be, while the second verb is "run", which is the SIMPLE PRESENT of the verb to run. So the Tense Consistency isn't respected. In place of the word RUN, there should be the word RAN ( which is the PAST SIMPLE of the verb run).