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
9:35
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.
8:45
minutes up to 2 hours (5 minutes more).
But since we added 5 minutes, now
1.
we must take away 5 minutes.
9:35
6:25 + 1 hours and 55 minutes
2.
8:25 - 5 Minutes = 8:20
And now we know the elapsed time!
8:20
3.
9:20
Ex) 7:45 + 1 hour and 50 minutes =
9:35
4.
1) 5:50 + 2 hours and 55 minutes =
8:45
11:30
5.
2) 7:40 + 1 hour and 55 minutes =
9:35
8:30
6.
3) 5:25 + 2 hours and 55 minutes =
8:20
4:10
7.
4) 7:25 + 1 hour and 55 minutes =
9:20
9:50
5) 7:40 + 3 hours and 50 minutes =
11:30
8.
6) 5:35 + 2 hours and 55 minutes =
8:30
6:45
9.
7) 2:15 + 1 hour and 55 minutes =
4:10
6:20
10.
8) 7:00 + 2 hours and 50 minutes =
9:50
2:30
11.
9) 4:55 + 1 hour and 50 minutes =
6:45
5:35
10) 3:25 + 2 hours and 55 minutes =
6:20
12.
11) 6:25 - 3 hours and 55 minutes =
2:30
3:40
13.
12) 7:25 - 1 hour and 50 minutes =
5:35
6:15
14.
13) 7:30 - 3 hours and 50 minutes =
3:40
5:15
15.
14) 10:10 - 3 hours and 55 minutes =
6:15
3:10
15) 8:05 - 2 hours and 50 minutes =
5:15
16.
16) 7:00 - 3 hours and 50 minutes =
3:10
5:50
17.
17) 7:40 - 1 hour and 50 minutes =
5:50
1:00
18.
18) 4:50 - 3 hours and 50 minutes =
1:00
3:25
19.
19) 6:20 - 2 hours and 55 minutes =
3:25
6:35
20) 10:30 - 3 hours and 55 minutes =
6:35
20.
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Math
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