1.
How many seconds are there in a minute?
Correct Answer
C. 60
Explanation
There are 60 seconds in one minute. This is a basic time conversion standard used worldwide. The division of time into seconds, minutes, and hours dates back to ancient civilizations like the Babylonians, who used a base-60 (sexagesimal) numeral system.
2.
How many seconds are there in an hour?
Correct Answer
C. 3,600
Explanation
There are 60 minutes in an hour, and each minute has 60 seconds. Therefore, to find the number of seconds in an hour, you multiply the number of minutes in an hour by the number of seconds in a minute: 60 minutes/hour×60 seconds/minute=3,600 seconds/hour.
This calculation is fundamental to understanding larger time conversions.
3.
How many seconds are there in a day?
Correct Answer
D. 86,400
Explanation
There are 24 hours in a day. To find the number of seconds in a day, you multiply the number of hours in a day by the number of seconds in an hour: 24 hours/day×3,600 seconds/hour=86,400 seconds/day
This is crucial for calculating time periods over multiple days and is used in various scientific and logistical applications.
4.
How many seconds are there in a week?
Correct Answer
C. 604,800
Explanation
There are 7 days in a week. To find the number of seconds in a week, you multiply the number of days in a week by the number of seconds in a day: 7 days/week×86,400 seconds/day=604,800 seconds/week
5.
How many seconds are there in 10 minutes?
Correct Answer
A. 600
Explanation
There are 60 seconds in a minute. To find the number of seconds in 10 minutes, you multiply the number of minutes by the number of seconds in a minute: 10 minutes×60 seconds/minute=600 seconds
6.
How many seconds are there in half an hour?
Correct Answer
D. 1,800
Explanation
There are 60 minutes in an hour. Half an hour is 30 minutes. To find the number of seconds in 30 minutes, you multiply the number of minutes by the number of seconds in a minute: 30 minutes×60 seconds/minute=1,800 seconds.
7.
How many seconds are there in 2 and a half hours?
Correct Answer
A. 9,000
Explanation
There are 60 minutes in an hour, and each minute has 60 seconds. For 2.5 hours, you first convert the hours to minutes and then to seconds: 2.5 hours×60 minutes/hour=150 minutes
150 minutes×60 seconds/minute=9,000 seconds
8.
How many seconds are there in 4 hours?
Correct Answer
B. 14,400
Explanation
There are 60 minutes in an hour, and each minute has 60 seconds. To find the number of seconds in 4 hours, you multiply the number of hours by the number of seconds in an hour: 4 hours×60 minutes/hour×60 seconds/minute=14,400 seconds
9.
How many seconds are there in 5 minutes?
Correct Answer
B. 300
Explanation
There are 60 seconds in a minute. To find the number of seconds in 5 minutes, you multiply the number of minutes by the number of seconds in a minute: 5 minutes×60 seconds/minute=300 seconds
10.
How many seconds are there in 15 minutes?
Correct Answer
C. 900
Explanation
There are 60 seconds in a minute. To find the number of seconds in 15 minutes, you multiply the number of minutes by the number of seconds in a minute: 15 minutes×60 seconds/minute=900 seconds
11.
How many seconds are there in 30 minutes?
Correct Answer
C. 1,800
Explanation
There are 60 seconds in a minute. To find the number of seconds in 30 minutes, you multiply the number of minutes by the number of seconds in a minute: 30 minutes×60 seconds/minute=1,800 seconds
12.
How many seconds are there in 2 hours?
Correct Answer
D. 7,200
Explanation
There are 60 minutes in an hour, and each minute has 60 seconds. To find the number of seconds in 2 hours, you multiply the number of hours by the number of seconds in an hour: 2 hours×60 minutes/hour×60 seconds/minute=7,200 seconds
13.
How many seconds are there in 6 hours?
Correct Answer
A. 21,600
Explanation
There are 60 minutes in an hour, and each minute has 60 seconds. To find the number of seconds in 6 hours, you multiply the number of hours by the number of seconds in an hour: 6 hours×60 minutes/hour×60 seconds/minute=21,600 seconds
14.
How many seconds are there in 12 hours?
Correct Answer
A. 43,200
Explanation
There are 60 minutes in an hour, and each minute has 60 seconds. To find the number of seconds in 12 hours, you multiply the number of hours by the number of seconds in an hour: 12 hours×60 minutes/hour×60 seconds/minute=43,200 seconds
15.
How many seconds are there in 3 days?
Correct Answer
D. 259,200
Explanation
There are 24 hours in a day, and each hour has 3,600 seconds. To find the number of seconds in 3 days, you multiply the number of days by the number of seconds in a day: 3 days×24 hours/day×3,600 seconds/hour=259,200 seconds
16.
How many minutes are there in 360 seconds?
Correct Answer
B. 6 minutes
Explanation
To convert seconds to minutes, you divide the number of seconds by 60 since there are 60 seconds in one minute. 360 seconds÷60 seconds/minute=6 minutes
17.
How many hours are there in 7,200 seconds?
Correct Answer
A. 1 hour
Explanation
To convert seconds to hours, you divide the number of seconds by 3,600 since there are 3,600 seconds in one hour (60 seconds per minute × 60 minutes per hour). 7,200 seconds÷3,600 seconds/hour=2 hours
18.
How many hours are there in 10,800 seconds?
Correct Answer
C. 3 hours
Explanation
To convert seconds to hours, you divide the number of seconds by 3,600 since there are 3,600 seconds in an hour. 10,800 seconds÷3,600 seconds/hour=3 hours.
19.
How many minutes are there in 2,400 seconds?
Correct Answer
C. 40 minutes
Explanation
To convert seconds to minutes, you divide the number of seconds by 60.
2,400 seconds÷60 seconds/minute=40 minutes
20.
How many hours are there in 14,400 seconds?
Correct Answer
C. 4 hours
Explanation
To convert seconds to hours, you divide the number of seconds by 3,600, as there are 3,600 seconds in one hour.
14,400 seconds÷3,600 seconds/hour=4 hours