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UNDERLYING SKILLS AND CONCEPTS:
tell time
Use Time
There are several different ways to read time.
a
K
ey Ide
You can read the time shown by this clock as
two fifteen,
a quarter past two, or
15 minutes after 2.
12
11
1
2
10
9
3
4
8
7
6
5
The hour hand goes around the clock twice each day.
From midnight to noon are the A.M. hours and from noon to midnight are
the P.M. hours. Midnight is 12:00 A.M. and noon is 12:00 P.M.
E x am p l E
1
Write the time, half past seven, as it would appear
on a digital clock.
Since there are 60 minutes in an hour, find 1! of 60,
2
or 30.
hour # hr
11
minute # min
12
1
2
10
9
3
4
8
6
5
Tim
e
7
Half past seven is 7:30.
E x am p l E
Time
2
The movie started at 2:25 P.M. and lasted 1 hour and 50 minutes.
What time was the movie over?
To find 1 hour and 50 minutes after 2:25,
First add the hours:
2 P.M. " 1 hour # 3 P.M.
Next, add the 50 minutes to the 25 minutes:25 " 50
# 75 minutes
Rename 75 minutes:
75 minutes
# 60 " 15 min
So,
75 minutes
# 1 hr " 15 min
Add the 1 hour and 15 minutes to 3:00: 3 P.M. " 1 hr " 15 min # 4:15 P.M.
The movie was over at 4:15 P.M.
page 254
Chapter 22 – Lesson 1
D – © CSL Associates, Inc. All rights reserved.
Half past seven means a half hour after seven.
Name
P RAC T I C E
Write each time as it would appear on a digital clock.
1. ten after six
6:10
4. quarter to five
4:45
2. ten minutes to three
2:50
5. twenty-five of two
1:35
6. five twenty-five
5:25
10:30
3. half past ten
Write A.M. or P.M. to complete each statement.
7. School starts at 8:15 A.M.
.
8. Mr. Lee cooks his supper at 5:45 P.M.
.
9. The baby takes an afternoon nap at 2:20 P.M.
.
10. Dan woke up at 1:10 A.M. in the middle of the night.
Give the ending time.
D – © CSL Associates, Inc. All rights reserved.
11. Phil made a phone call at 7:18 P.M.
The call lasted 25 minutes.
12. Jenna started a walk at 8:15 A.M.
She walked for 1 hour and 55 minutes.
13. Kendra is setting the VCR to tape a show that begins
at 11:00 P.M. The show lasts two and a half hours.
7:43 P.M.
10:10 A.M.
1:30 A.M.
14. Caitlin spent 3 1 hours cleaning her room.
2
12:55 P.M.
She started at 9:25 A.M.
Math
Reasoning
Time
MR 1.1
Which is a better estimate for the amount of time?
15. Starting time: 11:25 A.M.
A.
C
1 hour
3 hours
Chapter 22 – Lesson 1
Ending time: 1:32 P.M.
C
D.
2 hours
10 hours
page 255
MCX94.HW.CL.G4.FM&Lesson.v211
8/2/04
19:16
Page 170
Name
…at home!
P RAC T I C E
Write each time as it would appear on a digital clock.
1. quarter past six
6:15
4. twenty-five of four
3:35
2. ten after eleven
11:10
5. quarter to seven
6:45
3. half past twelve
12:30
6. three thirteen
3:13
Write A.M. or P.M. to complete each statement.
7. School ends at 2:25
P.M.
.
8. Mr. Jones eats his breakfast at 6:30
9. Mrs. Lilly takes a morning walk at 10:15
10. Joe goes to bed 8:30
P.M.
.
A.M.
A.M.
.
in the evening.
11. Aaron made a phone call at 8:20 P.M.
The call lasted 15 minutes.
8:35 P.M.
12. Helen started a walk at 6:30 A.M.
She walked for 1 hour and 25 minutes.
7:55 A.M.
13. Ginger is setting the VCR to tape a show that begins
at 11:30 P.M. The show lasts two and a half hours.
2:00 A.M.
14. Annette spent 3 1 hours planning a picnic.
2
9:00 P.M.
She started at 5:30 P.M.
Math
Reasoning
Time
MR 1.1
Which is a better estimate for the amount of time?
15. Starting time: 9:25 A.M.
A
C
page 170
1 hour
4 hours
Ending time: 1:32 P.M.
B
D
2 hours
10 hours
Home Resource and Homework
Chapter 22 Lesson 1
D – © CSL Associates, Inc. All rights reserved.
Give the ending time.
MCX94TEG4Ch01_32.v8.5.2 2/26/01 19:04 Page 469
Name
P RAC T I C E
Write each time as it would appear on a digital clock.
1. ten after six
6:10
4. quarter to five
4:45
2. ten minutes to three
2:50
5. twenty-five of two
1:35
6. five twenty-five
5:25
10:30
3. half past ten
Write A.M. or P.M. to complete each statement.
7. School starts at 8:15 A.M.
.
8. Mr. Lee cooks his supper at 5:45 P.M.
.
9. The baby takes an afternoon nap at 2:20 P.M.
.
10. Dan woke up at 1:10 A.M. in the middle of the night.
Give the ending time.
D – © CSL Associates, Inc. All rights reserved.
11. Phil made a phone call at 7:18 P.M.
The call lasted 25 minutes.
12. Jenna started a walk at 8:15 A.M.
She walked for 1 hour and 55 minutes.
13. Kendra is setting the VCR to tape a show that begins
at 11:00 P.M. The show lasts two and a half hours.
7:43 P.M.
10:10 A.M.
1:30 A.M.
14. Caitlin spent 3 1 hours cleaning her room.
2
12:55 P.M.
She started at 9:25 A.M.
Math
Reasoning
Time
MR 1.1
Which is a better estimate for the amount of time?
15. Starting time: 11:25 A.M.
A.
C
1 hour
3 hours
Chapter 22 – Lesson 1
Ending time: 1:32 P.M.
C
D.
2 hours
10 hours
Student Book Page
page 255
Name
…at home!
P RAC T I C E
Write each time as it would appear on a digital clock.
1. quarter past six
6:15
4. twenty-five of four
3:35
2. ten after eleven
11:10
5. quarter to seven
6:45
3. half past twelve
12:30
6. three thirteen
3:13
Write A.M. or P.M. to complete each statement.
7. School ends at 2:25
P.M.
.
8. Mr. Jones eats his breakfast at 6:30
9. Mrs. Lilly takes a morning walk at 10:15
10. Joe goes to bed 8:30
P.M.
.
A.M.
A.M.
.
in the evening.
11. Aaron made a phone call at 8:20 P.M.
The call lasted 15 minutes.
8:35 P.M.
12. Helen started a walk at 6:30 A.M.
She walked for 1 hour and 25 minutes.
7:55 A.M.
13. Ginger is setting the VCR to tape a show that begins
at 11:30 P.M. The show lasts two and a half hours.
2:00 A.M.
14. Annette spent 3 1 hours planning a picnic.
2
9:00 P.M.
She started at 5:30 P.M.
Math
Reasoning
Time
MR 1.1
Which is a better estimate for the amount of time?
15. Starting time: 9:25 A.M.
A
C
page 170
1 hour
4 hours
Ending time: 1:32 P.M.
B
D
2 hours
10 hours
Home Resource and Homework
Chapter 22 Lesson 1
D – © CSL Associates, Inc. All rights reserved.
Give the ending time.