1.
How many minutes are there in an hour?
Correct Answer
B. 60 minutes
Explanation
Calculating the number of minutes in an hour starts from the basic unit of time measurement where one hour is universally accepted to contain 60 minutes. Each hour on a clock represents a complete cycle of a small hand moving from one number to the next on a typical 12-hour clock face. Therefore, to determine how many minutes are in an hour, you use the simple multiplication of the number of hours by the number of minutes per hour, which is standard: 1 hour × 60 minutes/hour = 60 minutes.
2.
How many minutes are there in a day?
Correct Answer
A. 1,440 minutes
Explanation
The process to find the number of minutes in a day involves understanding that a day is composed of 24 hours. Each of these hours has been previously established to hold 60 minutes. Thus, the calculation for the total number of minutes in a day involves multiplying the total hours in a day by the number of minutes each hour holds. This relationship can be mathematically expressed and calculated as follows: 24 hours/day × 60 minutes/hour = 1,440 minutes.
3.
How many minutes are there in a week?
Correct Answer
A. 10,080 minutes
Explanation
A week is typically composed of 7 days. To find the total minutes in a week, we must multiply the number of days in a week by the number of minutes in each day. The calculation takes into account the continuous nature of time over a longer period such as a week and is computed as follows: 7 days/week × 1,440 minutes/day = 10,080 minutes.
4.
How many minutes are there in a year?
Correct Answer
A. 525,600 minutes
Explanation
To calculate the number of minutes in a common year, we start with the base that a year consists of 365 days. Multiplying the number of days in a year by the number of minutes in each day provides the total number of minutes that encapsulate an entire year. This calculation can be presented as follows: 365 days/year × 1,440 minutes/day = 525,600 minutes.
5.
How many minutes are there in a leap year?
Correct Answer
A. 527,040 minutes
Explanation
A leap year includes an additional day to the standard year, making it 366 days. This adjustment is necessary to align our calendar year with the astronomical year. Thus, to calculate the number of minutes in a leap year, one must multiply the number of days by the minutes contained in each day. The formula applied here is: 366 days/year × 1,440 minutes/day = 527,040 minutes.
6.
How many minutes are there in a decade (including 2 leap years)?
Correct Answer
B. 5,258,880 minutes
Explanation
A standard decade consists of ten years, typically including eight common years and two leap years. To calculate the total number of minutes in a decade, we must first compute the minutes in common years and then add the minutes in leap years. For the common years, the calculation is 8 years × 525,600 minutes/year = 4,204,800 minutes. For the leap years, it is 2 years × 527,040 minutes/year = 1,054,080 minutes. Adding these together gives the total minutes over a decade: 4,204,800 minutes + 1,054,080 minutes = 5,258,880 minutes.
7.
How many minutes are there in a month (30 days)?
Correct Answer
A. 43,200 minutes
Explanation
Assuming a typical month of 30 days, we calculate the total minutes by multiplying the number of days by the minutes per day. This results in a straightforward calculation: 30 days × 1,440 minutes/day = 43,200 minutes. This provides a clear representation of how minutes accumulate over the span of a month, an essential unit for planning and structuring activities over shorter, more manageable periods.
8.
How many minutes are there in a fortnight?
Correct Answer
A. 20,160 minutes
Explanation
A fortnight, consisting of two weeks or 14 days, requires a multiplication of the number of days by the number of minutes per day to find the total minutes. The formula used here is: 14 days × 1,440 minutes/day = 20,160 minutes. This calculation helps understand the bi-weekly cycles commonly used in work schedules and other recurring events.
9.
How many minutes are there in three hours?
Correct Answer
B. 180 minutes
Explanation
Calculating the number of minutes in three hours involves a simple multiplication of the hours by the minutes per hour: 3 hours × 60 minutes/hour = 180 minutes.
10.
How many minutes are there in half an hour?
Correct Answer
B. 30 minutes
Explanation
Half an hour, or 0.5 hours, when multiplied by the number of minutes in one hour, provides the total minutes: 0.5 hour × 60 minutes/hour = 30 minutes.
11.
How many minutes are there in a quarter-hour?
Correct Answer
A. 15 minutes
Explanation
A quarter-hour represents one-fourth of an hour. The standard hour consists of 60 minutes; thus, the calculation for a quarter-hour is straightforward: it simplifies to 15 minutes.
12.
How many minutes are there in five hours?
Correct Answer
C. 300 minutes
Explanation
To calculate the number of minutes in five hours, multiply the number of hours by the standard number of minutes per hour: 5 hours × 60 minutes/hour = 300 minutes.
13.
How many minutes are there in half a day?
Correct Answer
C. 720 minutes
Explanation
Half a day translates to 12 hours. Using the standard conversion of 60 minutes per hour, the total minutes in half a day are: 12 hours × 60 minutes/hour = 720 minutes.
14.
How many minutes are there in three days?
Correct Answer
B. 4,320 minutes
Explanation
Calculating the total number of minutes over three days involves multiplying the number of days by the minutes contained in each day: 3 days × 1,440 minutes/day = 4,320 minutes.
15.
How many minutes are there in 100 hours?
Correct Answer
B. 6,000 minutes
Explanation
The process to calculate the minutes in 100 hours involves simple multiplication of the hours by the number of minutes each hour contains: 100 hours × 60 minutes/hour = 6,000 minutes.