Determining Time Using Rounding Worksheet Template With Answer Key
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1
2Name:
Determining Time Using Rounding
Determine the answer by using rounding strategies.
A n s w e r s
6:25 + 2 hours = 8:25
When adding or subtracting time, it is often
4:45
Ex.
easier to round to the next hour first. In the
When rounded to 2 hours, we can
example below we can round 1 hour and 55
easily see that 6:25 + 2 hours is 8:25.
7:00
minutes up to 2 hours (5 minutes more).
But since we added 5 minutes, now
1.
we must take away 5 minutes.
2:55
6:25 + 1 hours and 55 minutes
2.
8:25 - 5 Minutes = 8:20
And now we know the elapsed time!
9:40
3.
9:40
Ex) 2:50 + 1 hour and 55 minutes =
4:45
4.
1) 5:05 + 1 hour and 55 minutes =
7:00
9:55
5.
2) 1:05 + 1 hour and 50 minutes =
2:55
7:45
6.
3) 5:50 + 3 hours and 50 minutes =
9:40
11:05
7.
4) 5:50 + 3 hours and 50 minutes =
9:40
10:40
5) 7:00 + 2 hours and 55 minutes =
9:55
8.
6) 5:50 + 1 hour and 55 minutes =
7:45
8:15
9.
7) 7:15 + 3 hours and 50 minutes =
11:05
5:20
10.
8) 7:45 + 2 hours and 55 minutes =
10:40
4:10
11.
9) 4:25 + 3 hours and 50 minutes =
8:15
7:40
10) 1:30 + 3 hours and 50 minutes =
5:20
12.
11) 8:05 - 3 hours and 55 minutes =
4:10
4:15
13.
12) 10:30 - 2 hours and 50 minutes =
7:40
3:10
14.
13) 6:10 - 1 hour and 55 minutes =
4:15
3:30
15.
14) 7:00 - 3 hours and 50 minutes =
3:10
7:35
15) 5:25 - 1 hour and 55 minutes =
3:30
16.
16) 9:25 - 1 hour and 50 minutes =
7:35
6:35
17.
17) 10:25 - 3 hours and 50 minutes =
6:35
3:45
18.
18) 6:40 - 2 hours and 55 minutes =
3:45
5:20
19.
19) 8:15 - 2 hours and 55 minutes =
5:20
5:30
20) 8:20 - 2 hours and 50 minutes =
5:30
20.
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Math
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