math

1. Elapsed Time

2. Elapsed Time
The difference
between
two times.

3. Step 1
Count the Hours
For example: 7:10 – 10:55

4. Step 1
Count the Hours
For example: 7:10 – 10:55
3 hours

5. Step 2
Count the Minutes
For example: 7:10 – 10:55

6. Step 2
Count the Minutes
For example: 7:10 – 10:55
45 minutes

7. Step 3
Write the elapsed time
3 hours and 45 minutes

8. How long does it take to fly from
Houston to Orlando?
Departure Time
Houston 8:00 am
Arrival Time
Orlando 11:10 am
From 8:00 am to 11:00 am is 3 hours.
Count 10 minutes from 11:00 am until 11:10 am

9. ANSWER
It takes 3 hours and
10 minutes to fly
from Houston to Orlando.

10. Natalie and Maria left the school at 3:05 pm.
They walked for 14 minutes before arriving at
Maria’s house. What time did they arrive at
Maria’s house?
3:05 + 14 = 3:19

11. The Garza’s will visit their cousin, who
lives 3 hours and 10 minutes away.
They want to get there at 11:30 am.
What time should they leave?
Subtract the time
11:30 – 3:10 = 8:20
They need to leave
at 8:20 am.

12. The sun set at 7:00 pm. It rose the
next morning at 5:15 am. How much
time passed from sunset to sunrise?
Count the hours 7:00 – 5:15 (10 hours)
Count the minutes 7:00 – 5:15 (15 minutes)
From sunset to sunrise, there was 10 hours and
15 minutes.

13. Mario scored a touchdown at
7:48 pm. Julio intercepted a
pass and scored a touchdown 11
minutes later. What time did
Julio score the second
touchdown?
Count the minutes
7:48 + 11 = 59.
Julio’s touchdown
happened at 7:59 pm.

14. Your dance partner
arrives at 3:30 pm
and leaves at 7:45
pm. How long did
you practice
together?
Count the hours 3:30 – 7:45 (4 hours)
Count the minutes (15 minutes)
You practiced 4 hours and 15 minutes
together.

15. Your Turn
1. Cindy is making brownies. They need to bake for 47
minutes. She put them in the oven at 6:30 P.M. At what
time should she take them out?
A. 6:47 pm B. 7:17 pm C. 7:07 pm D. 7:46 pm
2. How long did John sleep if he went to bed at 9:40 P.M., and got
up at 7:20 A.M.?
A. 2 hours and 20 minutes C. 9 hours and 40 minutes
B. 9 hours and 20 minutes D. 10 hours and 20 minutes

16. 3. Five hours and 42 minutes after he started a bike
tour, Chen completed the tour. If he finished at 2:17
P.M., what time did he start?
A. 8:25 am B. 8:35 am C. 7:59 pm D. 8:35 pm
4. Mrs. Duncan set a timer at 9:15 A.M. to ring in 35
minutes for a practice quiz in her classroom. What time
will it be when the timer rings?
A.10:00 am B. 9:45 am C. 9:55 am D. 9:50 am
5. Bill left home at 4:42 P.M. and rode his bike to his
friend's house. It took him 23 minutes. What time did he
arrive?
A. 5:15 pm B. 5:00 pm C. 4:55 pm D. 5:05 pm