How long between two times

Difficulty Standard · Set 9yz5jg

Fill in what you can and press Check. Nothing you type is sent anywhere.

1
A lesson runs from 08:40 to 12:00. How many minutes is that?
2
A lesson runs from 18:10 to 21:20. How many minutes is that?
3
A lesson runs from 17:35 to 20:20. How many minutes is that?
4
A lesson runs from 13:45 to 16:50. How many minutes is that?
5
A lesson runs from 19:40 to 21:45. How many minutes is that?
6
A lesson runs from 11:00 to 14:00. How many minutes is that?
7
A lesson runs from 11:15 to 13:05. How many minutes is that?
8
A lesson runs from 13:00 to 15:30. How many minutes is that?
9
A lesson runs from 10:25 to 13:20. How many minutes is that?
10
A lesson runs from 11:10 to 12:50. How many minutes is that?
11
A lesson runs from 12:10 to 14:00. How many minutes is that?
12
A lesson runs from 13:40 to 16:15. How many minutes is that?
13
A lesson runs from 08:15 to 10:25. How many minutes is that?
14
A lesson runs from 20:30 to 22:50. How many minutes is that?
15
A lesson runs from 18:50 to 22:00. How many minutes is that?
16
A lesson runs from 12:10 to 15:00. How many minutes is that?
17
A lesson runs from 12:05 to 15:00. How many minutes is that?
18
A lesson runs from 16:45 to 20:00. How many minutes is that?
19
A lesson runs from 14:20 to 17:05. How many minutes is that?
20
A lesson runs from 09:40 to 11:40. How many minutes is that?

What is in this set

The numbers in this set run from 5 to 55.
A careful solution takes 3 written steps on average.
The mistake this set invites most often, in 100% of the problems: the hours and minutes were treated as one number; count the whole hours in minutes and add what is left.
Answers are a whole number.

Drawing 240 problems from this page produced 235 different ones, 98% — 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 4 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.