Time 5 th Grade Strategies for Your Toolbox to Help Solve Problems Involving Time.
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Transcript of Time 5 th Grade Strategies for Your Toolbox to Help Solve Problems Involving Time.
![Page 1: Time 5 th Grade Strategies for Your Toolbox to Help Solve Problems Involving Time.](https://reader036.fdocuments.us/reader036/viewer/2022070409/56649e835503460f94b84f56/html5/thumbnails/1.jpg)
Time
5th Grade Strategies for Your Toolbox to Help Solve Problems
Involving Time
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Let’s Review – Counting Minutes There are 12 numbers around the face of a clock. Each number represents a set number of minutes past the hour.
So, to figure out the number of minutes,
you can count by 5s.
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How to Tell Time to the Minute
1.Count the minutes by 5.
2.Then count the minutes by ones.
510
15
20212223
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How to Tell Time to the Minute
3. Now read the hour hand.
4. Then say 1:23 or 23 minutes after 1.
510
15
20212223
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Let’s Review – Counting Minutes Example: When the minute hand is on the 6, it is 30 minutes past the hour Tip: Multiply 6 x 5 = 30; the minute is on the 6 and we are counting by 5s
So, to figure out the number of minutes,
you can count by 5s.
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Practice Calculating Minutes
• If the minute hand is on the 3, how many minutes past the hour is it? 15
• How about on the 7? 35
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Practice Calculating Minutes
• How about on the 11? 55
• How about on the 9? 45
Multiply 11 x 5 = 55 minutes
Multiply 9 x 5 = 45 minutes
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Are there any questions???
You are doing a great job!!
Let’s continue…
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Telling Time Lingo• When the minute hand rotates around one
time, a hour has past.
• When the minute hand points to 12, it is exactly an hour. Whatever number the hour hand points to is the hour.
• When the hour hand is between the hours, we can say it is “half-past” the hour.• When the hour hand points to the 3, it has gone a quarter way around; we can say it is “quarter-past” the hour.
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Telling Time Lingo
• When the hour hand points to the 9, it has gone three quarters around; we can say it is a “quarter ‘to” the hour.
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Different Ways to Say the Time
• An hour = 60 minutes & therefore can be divided into 4 parts.
• The parts are divided by the 0, 15, 30, & 45 minute marks as shown in the picture.
o'clock
quarter to
quarter past
half past
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Different Ways to Say the Time• Each of the 4
parts are called quarters.
• When the # of min. is greater than 30, instead of saying the # of min. after the hour, you can say the # of min. before the next hour, or the # of min. to the hour.
o'clock
quarter to
quarter past
half past
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Different ways to say the same time…
o'clock
half past
We could say that it is 3:45
We could say that it’s a quarter to 4.
The hour hand is between 3 and 4.
The minute hand is three quarters around the clock.
quarter to
quarter past
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We are almost finished
• You are amazing……..I knew you could do it.
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What is elapsed time?
• Elapsed time is the time or difference between a beginning time and an ending time.
• Finding elapsed time is an important skill in everyday life.
• Determining elapsed time requires understanding how to read a clock and understanding how we measure time.
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Elapsed Time
Write the time it will be in 2 hours?
3:10 _____ 5:35 _____ 12:04 _____
Write the time it will be in 4 hours?
7:11 _____ 6:42 _____ 11:05 _____
5:10 7:35
3:0510:4211:11
2:04
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Practice Finding Elapsed Time
• 4:00 to 4:30 11:00 to 11:45
• 7:30 to 8:10 9:15 to 10:20
• 8:20 to 8:25 4:10 to 5:15
• 3:55 to 4:00 12:25 to 2:30
45 min.
1 hr 5 min
1 hr 5 min
30 min.
50 min
2 hrs 5 min.
5 min.
5 min.
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5:35
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12:50
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5 minutes 43seconds
1 minute = 60 seconds
Divide 343 seconds by 60 seconds
343 ÷ 60 = 5 R 43
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15 minutes = 1 quarter hour
1 half hour = 30 minutes
1 half hour = 2 quarter hours
4 qtr hrs ÷ 2 qtr hrs = 2 half hrs
2
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1 year = 52 weeks
52
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