Time to the Minute — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Mia started baking at 5:47 PM. The cookies need 23 minutes. What time will they be done?
A) 6:00 PM
B) 6:05 PM
C) 6:10 PM
D) 6:15 PM
Adding 23 minutes to 5:47 PM means 47 + 23 = 70 minutes, which is one hour and 10 minutes. So 5:47 plus 23 minutes becomes 6:10 PM.
2. A train departs at 8:12 AM and arrives at 9:01 AM. How long is the trip?
A) 39 minutes
B) 49 minutes
C) 51 minutes
D) 59 minutes
From 8:12 AM to 9:12 AM is one hour, but the train arrives at 9:01, which is 11 minutes earlier than 9:12. So the trip is 60 - 11 = 49 minutes. You can also count 48 minutes from 8:12 to 9:00, plus 1 more to 9:01.
3. Which of these times is NOT in the afternoon?
A) 1:30 PM
B) 12:15 PM
C) 11:45 AM
D) 3:00 PM
Afternoon means after noon, which uses PM. 11:45 AM is in the morning because AM is for times before noon, while 1:30 PM, 12:15 PM, and 3:00 PM all happen in the afternoon.
4. Leo finished piano at 4:38 PM after playing for 32 minutes. What time did he start?
A) 3:56 PM
B) 4:06 PM
C) 4:16 PM
D) 4:02 PM
Working backward from 4:38 PM by 32 minutes gives 4:06 PM, because 38 - 32 = 6. Since the minutes don't go below zero, the hour stays at 4.
Part B: Fill in the Blank
Write the correct answer on each line.
1. If art class starts at 10:43 AM and lasts 40 minutes, it ends at 11:23 AM.
From 10:43 AM to 11:00 AM is 17 minutes, leaving 23 more minutes of the 40-minute class. So art class ends at 11:23 AM.
2. From 2:29 to 3:14, 45 minutes have passed.
From 2:29 to 3:00 is 31 minutes, then 3:00 to 3:14 adds 14 more, giving 31 + 14 = 45 minutes.
3. A game begins at 7:36 PM and ends at 8:11 PM. The game lasted 35 minutes.
Both times share the hour, so subtract by borrowing: from 7:36 to 8:00 is 24 minutes, then 8:00 to 8:11 adds 11 more, for 24 + 11 = 35 minutes.
4. If it is 5:08 PM now and the show started 42 minutes ago, it started at 4:26 PM.
Subtracting 42 minutes from 5:08 means borrowing an hour: 5:08 becomes 4 hours and 68 minutes, and 68 - 42 = 26, so the show started at 4:26 PM.
5. From 12:51 PM to 1:19 PM, 28 minutes have passed.
From 12:51 PM to 1:00 PM is 9 minutes, then 1:00 to 1:19 adds 19 more, giving 9 + 19 = 28 minutes.