Time - Add hours  Learn  Contents and Search  Practice  Next Lesson  Play  Previous Lesson  Explore   Feedback Practice Your Spelling List States of the United States Nations of the World   Addition of Time How to add hours to a time: Add the number of hours to the hours portion of the time. If the number of hours is more than 12 do the following: Subtract 12 from the number of hours. If the time was AM change it to PM, if it was PM change it to AM. Repeat this process if the number of hours is still more than 12. If the number of hours is equal to 12 change AM to PM or PM to AM. Example: What time is 16 hours after 9:00 AM? Add the hours together. (16 hours + 9 hours = 25 hours) If the number of hours is more than 12 do the following: Subtract 12 from the number of hours. (25 hours - 12 hours = 13 hours) Change the AM to PM. Repeat this process if the number of hours is still more than 12. Subtract 12 hours from 13 hours. Change the PM to AM. Answer: 1:00 AM Return to Top Share Practice What is the Sum of the times? You have correct and   incorrect.  This is percent correct. Return to Top Tell Others About This Site AAASpell.com Practice Your Spelling List Practice Our Spelling Lists Vocabulary Practice Alphabet Practice Play Game What is it? Best Score How many correct answers can you get in 60 seconds? Extra time is awarded for each correct answer. Play longer by getting more correct. How fast can you get 20 more correct answers than wrong answers? Sudoku Timez Attack Multiplication Video Game Return to Top Explore Math Lessons by Grade Kindergarten  First Second Third Fourth Fifth Sixth Seventh Eighth Math Topics Addition Algebra Comparing Counting Decimals Division Equations Estimation Exponents Fractions Geometry Graphs Measurement Mental Math Money Multiplication Naming Numbers Patterns Percent Place Value Practical Math Properties Ratios Statistics Subtraction Math Resources Schools Teachers Parents Home Schooling Web Resources Spelling Lessons by Grade First Second Third Fourth Fifth Sixth Seventh Eighth or - Practice Your Word List Vocabulary Lessons by Grade First Second Third Fourth Fifth Sixth Seventh Eighth Geography States of the United States Nations of the World Geographical Photos WorldPlenty.com What will the future be like? Other Interests Music DVD Computer and Video Games Books Sports Toys and Games Return to Top About This Site Frequently Asked Questions Send Us Feedback About this Site Privacy Policy Purchase The Math Class CD Share| Return to Top