All questions
Question 1
Jamal's soccer practice started at 3:15 PM and ended at 4:45 PM. How long was practice?
- 1 hour 45 minutes
- 1 hour 15 minutes
- 30 minutes
- 1 hour 30 minutes (correct answer)
Explanation: From 3:15 PM to 4:45 PM is 1 hour 30 minutes, matching choice D. Choice A overcounts the time by 15 minutes. Choice B undercounts the time by 15 minutes. Choice C only accounts for a small part of the time that passed.
Question 2
A movie theater shows previews for 18 minutes, then the main movie for 1 hour and 34 minutes, followed by 8 minutes of credits. If the previews start at 7:25 PM, what time do the credits finish?
- 9:25 PM (correct answer)
- 9:17 PM
- 9:33 PM
- 9:05 PM
Explanation: Adding 18 minutes, 1 hour 34 minutes, and 8 minutes to 7:25 PM gives a total of 2 hours, so the credits finish at 9:25 PM. Choice B (9:17) leaves out part of the total time. Choice C (9:33) adds a few extra minutes beyond the correct total. Choice D (9:05) does not account for all three time segments.
Question 3
The bus leaves at 8:35 AM and arrives at 8:52 AM. How long is the ride?
- 1 hour 17 minutes
- 12 minutes
- 17 minutes (correct answer)
- 27 minutes
Explanation: 17 minutes is correct because only minutes pass between 8:35 and 8:52, and 52 minus 35 equals 17. 1 hour 17 minutes is incorrect; it mistakenly adds an extra hour that didn't pass. 12 minutes is incorrect because it doesn't match the actual difference between the times. 27 minutes is incorrect; it doesn't come from subtracting 35 from 52.
Question 4
Keisha finished her homework at 7:30 PM after working for 25 minutes. What time did she start?
- 7:05 PM (correct answer)
- 7:55 PM
- 7:25 PM
- 6:55 PM
Explanation: 7:05 PM is correct because starting 25 minutes before 7:30 PM gives 7:05 PM. 7:55 PM is incorrect; it adds 25 minutes instead of subtracting. 7:25 PM is incorrect because it only subtracts 5 minutes, not 25. 6:55 PM is incorrect; it subtracts too much time from 7:30 PM.
Question 5
Marcus started reading at 6:15 PM and finished at 7:05 PM. How long did he read?
- 45 minutes
- 40 minutes
- 1 hour 10 minutes
- 50 minutes (correct answer)
Explanation: 50 minutes is correct because from 6:15 PM to 7:05 PM is 50 minutes. 45 minutes is incorrect because it undercounts the time by 5 minutes. 40 minutes is incorrect because it undercounts the time by 10 minutes. 1 hour 10 minutes is incorrect because it overcounts the total time elapsed.
Question 6
Jamal's soccer practice started at 3:15 PM and ended at 4:45 PM. How long was practice?
- 1 hour 15 minutes
- 1 hour 30 minutes (correct answer)
- 2 hours 30 minutes
- 30 minutes
Explanation: From 3:15 PM to 4:45 PM is 1 hour and 30 minutes, matching choice B. Choice A undercounts the time by 15 minutes. Choice C overcounts by a full extra hour. Choice D only accounts for part of the time that passed.
Question 7
The school assembly starts at 9:15 AM and ends at 10:08 AM. Students return to class and work for 27 minutes before lunch break. How many total minutes pass from the start of assembly until lunch break begins?
- 53 minutes
- 80 minutes (correct answer)
- 73 minutes
- 88 minutes
Explanation: The assembly lasts 53 minutes (from 9:15 to 10:08), and adding the 27 minutes of class work gives 53 plus 27, or 80 minutes total. Choice A (53) only counts the assembly time and leaves out the 27 minutes of work. Choice C (73) comes from an incorrect addition of the two times. Choice D (88) overcounts the total by adding too many minutes.
Question 8
Tom starts his homework at 6:45 PM. He spends 35 minutes on math, 53 minutes on science, and takes a 10-minute break in between. What time does he finish?
- 8:33 PM
- 8:23 PM (correct answer)
- 8:43 PM
- 8:18 PM
Explanation: Tom's total time is 35 + 53 + 10 = 98 minutes, which is 1 hour and 38 minutes. Adding that to 6:45 PM gives 8:23 PM, making Choice B correct. Choice A (8:33) and Choice C (8:43) come from small errors when adding the minutes. Choice D (8:18) comes from forgetting to include one of the time amounts.
Question 9
Sofia put cookies in the oven at 3:40 PM. The cookies bake for 12 minutes. When are the cookies done?
- 3:52 PM (correct answer)
- 3:48 PM
- 4:12 PM
- 3:28 PM
Explanation: Adding 12 minutes to 3:40 PM gives 3:52 PM, matching choice A. Choice B undercounts the time that is added. Choice C adds too much time. Choice D subtracts minutes instead of adding them.
Question 10
Jamal's soccer practice started at 3:15 PM and ended at 4:45 PM; how long was practice?
- 2 hours 30 minutes
- 1 hour 15 minutes
- 30 minutes
- 1 hour 30 minutes (correct answer)
Explanation: This question tests 3rd grade time: telling time to the nearest minute and calculating time intervals (CCSS.3.MD.1). To calculate elapsed time, count forward from start time to end time, often breaking it into hours first, then minutes; add hours separately and then minutes. For example, from 3:15 to 4:45: from 3:15 to 4:15 is 1 hour, then to 4:45 is 30 minutes, total 1 hour 30 minutes. The problem states Jamal's soccer practice started at 3:15 PM and ended at 4:45 PM. Choice B is correct because breaking it down gives 1 hour to 4:15, plus 30 minutes to 4:45, totaling 1 hour 30 minutes. Choice C represents doubling the time incorrectly, which typically happens because students might add the hours and minutes without breaking it properly. To help students: Teach number line jumps by hours then minutes. Practice real-world sports schedules and watch for struggles with crossing hour boundaries.
Question 11
Sofia put cookies in the oven at 3:40 PM, and they bake 12 minutes; when are they done?
- 4:12 PM
- 3:48 PM
- 3:52 PM (correct answer)
- 4:52 PM
Explanation: This question tests 3rd grade time: telling time to the nearest minute and calculating time intervals (CCSS.3.MD.1). To read an analog clock, find where the hour hand (short) points for the hour and the minute hand (long) points for minutes. Each number represents 5 minutes (5, 10, 15, 20, etc.). To calculate elapsed time, count forward from start time to end time, often breaking it into hours first, then minutes. The problem states Sofia put cookies in the oven at 3:40 PM, and they bake for 12 minutes. Choice A is correct because from 3:40 to 3:50 is 10 minutes, plus 2 more to 3:52 totals 12 minutes. Choice B represents adding only 8 minutes, a common error if students miscount from 40 to 48. To help students: Use hands-on clocks where students can move the hands to practice reading time. For elapsed time, teach number line strategy: draw a line, mark start time, jump by hours then minutes to end time, add up jumps. Practice with real-world activities ('How long until recess?' 'What time will we finish?'). Watch for: Students who read 3:25 as 5:15 (confusing hands), students who add 3:40 + 30 minutes = 3:70 (don't convert 70 minutes to 1 hour 10 minutes), and students who struggle crossing hour boundaries.
Question 12
The movie started at 2:15 PM and lasted 1 hour 38 minutes; what time did it end?
- 4:53 PM
- 3:53 PM (correct answer)
- 3:43 PM
- 3:38 PM
Explanation: This question tests 3rd grade time: telling time to the nearest minute and calculating time intervals (CCSS.3.MD.1). To read an analog clock, find where the hour hand (short) points for the hour and the minute hand (long) points for minutes. Each number represents 5 minutes (5, 10, 15, 20, etc.). To calculate elapsed time, count forward from start time to end time, often breaking it into hours first, then minutes. The problem states the movie started at 2:15 PM and lasted 1 hour 38 minutes. Choice B is correct because add 1 hour to 2:15 to get 3:15, then add 38 minutes to reach 3:53 PM. Choice C represents adding the 38 minutes to the hour incorrectly, getting 4:53 PM; this typically happens because students don't break down the hours and minutes separately. To help students: Use hands-on clocks where students can move the hands to practice reading time. For elapsed time, teach number line strategy: draw a line, mark start time, jump by hours then minutes to end time, add up jumps. Practice with real-world activities ('How long until recess?' 'What time will we finish?'). Watch for: Students who read 3:25 as 5:15 (confusing hands), students who add 3:40 + 30 minutes = 3:70 (don't convert 70 minutes to 1 hour 10 minutes), and students who struggle crossing hour boundaries.
Question 13
Marcus started reading at 6:15 PM and finished at 7:05 PM; how many minutes did he read?
- 60 minutes
- 40 minutes
- 50 minutes (correct answer)
- 1 hour 10 minutes
Explanation: This question tests 3rd grade time: telling time to the nearest minute and calculating time intervals (CCSS.3.MD.1). To read an analog clock, find where the hour hand (short) points for the hour and the minute hand (long) points for minutes. Each number represents 5 minutes (5, 10, 15, 20, etc.). To calculate elapsed time, count forward from start time to end time, often breaking it into hours first, then minutes. The problem states Marcus started reading at 6:15 PM and finished at 7:05 PM. Choice B is correct because from 6:15 to 7:15 is 1 hour, but stopping at 7:05 is 10 minutes less, so 60 - 10 = 50 minutes. Choice C represents not crossing the hour boundary correctly, adding extra time; this typically happens because students forget that 60 minutes = 1 hour and miscount the interval. To help students: Use hands-on clocks where students can move the hands to practice reading time. For elapsed time, teach number line strategy: draw a line, mark start time, jump by hours then minutes to end time, add up jumps. Practice with real-world activities ('How long until recess?' 'What time will we finish?'). Watch for: Students who read 3:25 as 5:15 (confusing hands), students who add 3:40 + 30 minutes = 3:70 (don't convert 70 minutes to 1 hour 10 minutes), and students who struggle crossing hour boundaries.
Question 14
How many minutes are between 8:35 AM and 8:52 AM?
- 27 minutes
- 7 minutes
- 12 minutes
- 17 minutes (correct answer)
Explanation: This question tests 3rd grade time: telling time to the nearest minute and calculating time intervals (CCSS.3.MD.1). To calculate elapsed time, count forward from start time to end time, often breaking it into hours first, then minutes. When both times are in the same hour, simply subtract the minutes. The problem states start time of 8:35 AM and end time of 8:52 AM. Choice B (17 minutes) is correct because 52 - 35 = 17 minutes elapsed between these times. Choice A (27 minutes) might result from adding instead of finding the difference, while Choice C (12 minutes) could come from miscalculation. To help students: Use number line strategy - draw a line, mark 8:35, count forward to 8:52, which is 17 jumps. Practice with clocks showing both times side by side. For same-hour problems, teach direct subtraction of minutes. Watch for students who try to subtract 35 from 52 incorrectly or who get confused about whether to add or subtract.