Hour
Definition
An hour is a unit of time equal to 60 minutes, or 3600 seconds. It is commonly used to measure the duration of time and is a fundamental unit in the concept of time.
Conversion
1 hour = 60 minutes
1 hour = 3600 seconds
Use in Daily Life
Hours are used in various daily activities such as scheduling, timing events, and measuring the duration of activities and tasks.
Study Tips
- Practice converting hours to minutes and seconds, and vice versa.
- Use a clock or timer to visualize and understand the concept of hours.
- Memorize common hourly durations, such as 1 hour, 2 hours, 30 minutes, etc.
Practice Problems
1. Convert 3 hours to minutes.
2. How many seconds are there in 4.5 hours?
3. If an activity takes 2 hours and 15 minutes, how many minutes is that in total?
.◂Math Worksheets and Study Guides Seventh Grade. Rational and Irrational Numbers
Study Guide
Rational and Irrational Numbers 
Worksheet/Answer key
Rational and Irrational Numbers Worksheet/Answer key
Rational and Irrational Numbers Worksheet/Answer key
Rational and Irrational Numbers
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyThe resources above cover the following skills:
Connections to the Grade 7 Focal Points (NCTM)
Number and Operations: In grade 4, students used equivalent fractions to determine the decimal representations of fractions that they could represent with terminating decimals. Students now use division to express any fraction as a decimal, including fractions that they must represent with infinite decimals. They find this method useful when working with proportions, especially those involving percents. Students connect their work with dividing fractions to solving equations of the form ax = b, where a and b are fractions. Students continue to develop their understanding of multiplication and division and the structure of numbers by determining if a counting number greater than 1 is a prime, and if it is not, by factoring it into a product of primes.