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# School started at 8:05 a.m. and ended at 2:40 p.m. The work below shows Erica’s calculation of the length of the school day. Which two errors did Erica make? 1.She subtracted instead of adding the

School started at 8:05 a.m. and ended at 2:40 p.m. The work below shows Erica’s calculation of the length of the school day.

Which two errors did Erica make?

1.She subtracted instead of adding the times.

2.She subtracted the end time from the start time.

3.She did not regroup 1 hour for 60 minutes to subtract the minutes.

4.She did not account for a.m. and p.m. in the start and end times.

5.She switched the hours and minutes in both the start and end times.