Question

15 minute increments are also referred to as:

Answer 1

15 minute increments are known as quarter-hours, and learning to tell time and operate with time includes understanding these increments. Addition and subtraction with time, as well as conversion between different time units, are essential arithmetic skills related to time.

Step-by-step explanation:

15 minute increments are often referred to as quarter-hours because there are four of them in one hour. Understanding these increments is a part of learning to tell time and perform basic operations with time. For example, in a clock divided into 5-minute intervals, three of those intervals, or 15 minutes, would equal one quarter-hour.

Let's review some time addition and subtraction problems for further clarification:

1. Addition: 15 minutes + 60 minutes equals 75 minutes, which is 1 hour and 15 minutes or 1.25 hours.
2. Addition: 10 minutes + 20 minutes equals 30 minutes or half an hour.
3. Addition: 15 seconds + 45 seconds equals 60 seconds, which is equivalent to 1 minute.

Now, let's look at some subtraction tasks:

1. Subtraction: 35 minutes - 10 minutes equals 25 minutes.
2. Subtraction: 60 minutes - 10 minutes equals 50 minutes.
3. Subtraction: 1 hour and 75 minutes (which is the same as 2 hours and 15 minutes) - 20 minutes equals 1 hour and 55 minutes.
4. Subtraction: 2 hours and 10 minutes - 20 minutes equals 1 hour and 50 minutes.
5. Subtraction: 1 hour (or 60 minutes) and 5 seconds - 5 minutes equals 55 minutes and 5 seconds.

When converting units of time:

1. 3000 seconds is equal to 50 minutes.
2. 6000 seconds is equal to 1.667 hours, which can also be written as 1 hour and 40 minutes.
3. 360 minutes is equal to 6 hours.

This review helps students understand the conversion between different time units and the application of basic arithmetic operations with time.

Answer 2

a quarter or the 7/8 rule in measurements