## Add Half-Hours to a Time

### Add Hours to Clock Time: Learn

How to add hours and half-hours to a time:

• Add the minutes together. If the result is 60 or more,
• subtract 60 from the minutes
• add 1 to one of the hours
• Add the hours together. If the result is more than 12,
• Subtract 12 from the number of hours
• Switch AM to PM (or the reverse)
• Repeat until the hours are 12 or less
• If the final hours are exactly 12, switch AM to PM or PM to AM.

Example: What time is 17 hours and 30 minutes after 3:30 AM?

• Add the minutes: 30 + 30 = 60. Since this number is 60 or more,
• Subtract 60 from the minutes (60-60 = 0 minutes).
• Add 1 to the hours (17+1 = 18 hours)
• Add the hours: 18 + 3 = 21 hours. Since this number is more than 12,
• Subtract 12 from the hours (21-12 = 9 hours)
• Change AM (the original time) to PM.

#### What is the sum of the timse?

00:00

hours minutes past

0:00 AMPM

Press the Start Button To Begin

You have 0 correct and 0 incorrect.

This is 0 percent correct.

### Play

Game Name Description Best Score
How many correct answers can you get in 60 seconds? 0
Extra time is awarded for each correct answer.
Play longer by getting more correct.
0
How fast can you get 20 more correct answers than wrong answers? 999