© 2009 Virtual Computer Inc. – Company Confidential1 Maintaining a Desktop SLA.
CONFIDENTIAL1 Good Afternoon! Today we will be learning about Elapsed time Let’s warm up : Find...
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Transcript of CONFIDENTIAL1 Good Afternoon! Today we will be learning about Elapsed time Let’s warm up : Find...
CONFIDENTIAL 1
Good Afternoon!Today we will be learning about
Elapsed time
Let’s warm up :
Find the amount of change:
1) Price: $13.69 Amount Given: $20.00
2) Price: $5.78 Amount Given: $10.00
Round the given money amount :
3) $5.07, $4.58, $8.69
4) $14.78, $24.22, $32.57
CONFIDENTIAL 2
Let’s review the previous topicMoney (make change, compare and order)
Currency: It is a unit of exchange, facilitating the transfer of goods and/or services.
It is one form of money, where money is anything that serves as a medium of
exchange, a store of value, and a standard of value.
To facilitate trade between currency zones, there are exchange rates, which are the prices at which
currencies (and the goods and services of individual currency zones) can be exchanged against each
other.
CONFIDENTIAL 3
Coins and paper money are both forms of currency.
o Pennyo 1 penny,o 1 cent,o or 1¢
oNickel1 nickel,5 cents, or 5¢5 cents= 1 nickel
oDime1 dime,10 cents
Review
CONFIDENTIAL 4
Review
oQuarter1 quarter,25 cents,
Dollar Bill1 Dollar100 cents,or 100¢Count by 100 to count dollars.$1.00, $2.00, $3.00 and so on.4 quarters = 1 Dollar20 nickels = 1 Dollar10 dimes = 1 Dollar
CONFIDENTIAL 5
Make Change
Start at $7.67. Count up to $10.00
$7.68 $7.69 $7.70 $7.75 $8.00 $9.00 $10.00
Mary bought a bag at a price of $7.67; Amount given to the shopkeeper was $10.00. What change did she
get?
Review
CONFIDENTIAL 6
Review
To check the change count the bills and coins from the greatest to least value.
$1.00 $2.00 $2.25 $2.30 $2.31 $2.32 $2.33
So Mary should receive $2.33 as change.
Make Change
CONFIDENTIAL 7
Review
Compare and Order Money Amounts
You can use a place value chart to compare money amounts.
Start at left. Look for the first place where the digits are different.
Example: Compare $306.97 and $319.23Hundred Dollars
Ten Dollars
One Dollar
Cents
3 0 6 97
3 1 9 23
Same different
The amount $319.23 has more ten dollars than $306.97So, $319.23 > $306.97
CONFIDENTIAL 8
ReviewRound Money
Round: $7.13, $6.89, $6.95
Step 1: Find the digit in the dollars place.
•$7.13•$6.89•$6.95
Step 2: Look at the place to the right of the dollars place.
•$7.13•$6.89•$6.95
Step 3: If the digit is less than 5, round down. If the digit is 5 or greater, round up.
$7.13 $7.00$6.89 $7.00$6.95 $7.00
CONFIDENTIAL 9
Let’s start the topicElapsed time
A.M.: A name for time between 12:00 midnight and 12:00 noon. On school days you might wake up at 7:00 A.M.
P.M.: A name for time between 12:00 noon and 12:00 midnight. Many people eat dinner at 6:00 P.M.
Today we will discuss about the time.
A day has 24 hours. These 24 hours is divided into two time zones. These are “A.M.” and
“P.M.”.
The standard unit of time is second.
CONFIDENTIAL 10
Time Facts60 seconds 1 minute
15 minutes 1 quarter-hour
60 minutes 1 hour
90 minutes 1 ½ hours
180 minutes 3 hours
The simple conversion table for time is:
To convert from minutes to seconds multiply by 60 and to convert from seconds to minutes divide by
60. Similarly,
To convert from hours to minute multiply by 60 and to convert from minute to hours divide by
60.
CONFIDENTIAL 11
9:15 A.M. Nine-fifteen in the
morning, or Quarter after nine, or Fifteen minutes after
nine
4:25 P.M. Four twenty-five in the
afternoon, or 25 minutes after 4
Tell Time
CONFIDENTIAL 12
Tell Time
15 minutes (min) =¼ hour (1/4 h) or
1 quarter hour
30 minutes (min) =½ hour (1/2 h) or2 quarter hours
CONFIDENTIAL 13
45 minutes (min) =¾ hour (3/4 h) or3 quarter hours
60 minutes (min) =1 hour (1 h) or4 quarter hours
Tell Time
CONFIDENTIAL 14
Elapsed Time
Elapsed Time: It is the amount of time that passes from the start to the end of an activity.
Example: How much time has elapsed between 8:20 A.M. and 11:35 A.M.?
CONFIDENTIAL 15
Step 1: First count the number of hours.
Elapsed Time
From 8:20 to 11:35 is 3 hours.
CONFIDENTIAL 16
From 11:20 to 11:35 is 15 minutes.
Step 2: Then count the number of minutes.
Elapsed Time
So, 3 hours 15 minutes
has passed.
CONFIDENTIAL 17
Count past midnight
What time is 4 hours 20 minutes after 11.00 p.m.?
Start at 11.00 p.m. Count on 4 hours.
11.00 -> 12.00 -> 1.00 -> 2.00 -> 3.00
Add on 20 minutes: 3.20 a.m.
(Note: After 12.00 midnight write A.M.)
So, 4 hours 20 minutes after 11.00 p.m. is 3.20 a.m.
CONFIDENTIAL 18
Assessment
Complete the conversion tables:
Hours 1 2 3 4 5
Minutes 60 180
Seconds 60 120 180 240 300
Minutes 1 4
Hours 5 8
Minutes 180 360 540
1)
2)
3)
CONFIDENTIAL 19
Calculate how much time has elapsed between:
4) 5:30 A.M. and 8:35 A.M.?
5) 7:55 P.M. and 10:40 P.M.?
6) 2:15 A.M. and 9:25 A.M.?
7) 8:30 P.M. and 9:40 P.M.?
CONFIDENTIAL 20
Calculate how much time has elapsed between:
8) 8:30 A.M. and 1:10 P.M.?
9) 9:35 A.M. and 3:40 P.M.?
10) 10:15 P.M. and 9:25 A.M.?
CONFIDENTIAL 21
Very Good!Let's Review
A.M.: A name for time between 12:00 midnight and 12:00 noon. On school days you might wake up at 7:00 A.M.
P.M.: A name for time between 12:00 noon and 12:00 midnight. Many people eat dinner at 6:00 P.M.
A day has 24 hours. These 24 hours is divided into two time zones. These are “A.M.” and “P.M.”.
Time Facts
60 seconds 1 minute
15 minutes 1 quarter-hour
60 minutes 1 hour
90 minutes 1 ½ hours
180 minutes 3 hours
The simple conversion table for time is:
CONFIDENTIAL 22
Review
9:15 A.M. Nine-fifteen in the
morning, or Quarter after nine, or Fifteen minutes after
nine
4:25 P.M. Four twenty-five in the
afternoon, or 25 minutes after 4
Tell Time
CONFIDENTIAL 23
Review
45 minutes (min) =¾ hour (3/4 h) or3 quarter hours
60 minutes (min) =1 hour (1 h) or4 quarter hours
Tell Time
CONFIDENTIAL 24
Review
Elapsed Time: It is the amount of time that passes from the start to the end of an activity.
How much time has elapsed between 8:20 A.M. and 11:35 A.M.?
Step 1: First count the number of hours.
From 8:20 to 11:20 is 3 hours.
Step 2: Then count the number of minutes. From 11:20 to 11:35 is 15 minutes.
So, 3 hours 15 minutes
has passed.
CONFIDENTIAL 25
Review
Count past midnight
What time is 4 hours 20 minutes after 11.00 p.m.?
Start at 11.00 p.m. Count on 4 hours.
11.00 -> 12.00 -> 1.00 -> 2.00 -> 3.00
Add on 20 minutes: 3.20 a.m.
(Note: After 12.00 midnight write A.M.)
So, 4 hours 20 minutes after 11.00 p.m. is 3.20 a.m.
CONFIDENTIAL 26
You have done a nice job.See you in the next session.