QUESTION
How do I get a set of subtraction problems which include numbers up to
20, but only subtracting single digits. For example, 14 - 7 or 15 - 9
but not 18 - 12 or 16 - 14.
ANSWER
You cannot fine tune the problem set to the degree that you have
described when you create the quiz.
To handpick problems which are most suitable for your students you can do this:
1. Create a large test of 100 questions.
2. Before students test, edit the test by clicking on its name in the list.
3. Check the questions you want removed from the test and click Delete.
4. Save the edited test containing only the problems you want.
Remember that once some students have tested, a quiz can no longer be edited.
