Elapsed time across midnight

Difficulty Stretch · Set k4h58g

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1
A flight leaves at 23:43 and arrives at 05:10 the next morning. How many minutes is that?
2
A train leaves at 23:08 and arrives at 05:45 the next morning. How many minutes is that?
3
A flight leaves at 23:02 and arrives at 06:52 the next morning. How many minutes is that?
4
A train leaves at 23:25 and arrives at 05:22 the next morning. How many minutes is that?
5
A flight leaves at 23:49 and arrives at 04:22 the next morning. How many minutes is that?
6
A shift leaves at 20:36 and arrives at 05:41 the next morning. How many minutes is that?
7
A train leaves at 22:28 and arrives at 03:14 the next morning. How many minutes is that?
8
A train leaves at 21:41 and arrives at 05:10 the next morning. How many minutes is that?
9
A train leaves at 23:04 and arrives at 05:05 the next morning. How many minutes is that?
10
A shift leaves at 21:36 and arrives at 06:57 the next morning. How many minutes is that?
11
A flight leaves at 23:32 and arrives at 05:38 the next morning. How many minutes is that?
12
A shift leaves at 23:26 and arrives at 06:40 the next morning. How many minutes is that?
13
A flight leaves at 23:14 and arrives at 02:52 the next morning. How many minutes is that?
14
A flight leaves at 19:00 and arrives at 00:57 the next morning. How many minutes is that?
15
A flight leaves at 21:41 and arrives at 01:03 the next morning. How many minutes is that?
16
A train leaves at 21:58 and arrives at 02:47 the next morning. How many minutes is that?
17
A flight leaves at 19:13 and arrives at 01:26 the next morning. How many minutes is that?
18
A shift leaves at 22:17 and arrives at 05:18 the next morning. How many minutes is that?
19
A flight leaves at 20:49 and arrives at 04:38 the next morning. How many minutes is that?
20
A train leaves at 21:02 and arrives at 02:25 the next morning. How many minutes is that?

What is in this set

The numbers in this set run from 1 to 59.
Every problem in it will run past midnight.
A careful solution takes 4 written steps on average.
The mistake this set invites most often, in 100% of the problems: the two clock times were subtracted as they stood.
Answers are a whole number.

Drawing 240 problems from this page produced 240 different ones, 100% — so a sheet of 20 is a new sheet almost every time.

The same skill, harder or easier

We would put this in front of a grade 6 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.

Next to this

The 12-hour clock to the 24-hour clock

Numbers 1–59; 55% fall before noon.

Working out the price of one

Numbers 2–89.2.

All of money and time

12 skills in this topic, 36 sets between them.

Printing it

The printed sheet carries no menus and no advertising, and the answer key is on its own page.