Mental Arithmetic Challenge - Starter Activity - Customisable difficulty- 100 questions with answers

I usually use this resource at a starter or a settler activity with a given time limit (say 10 mins).
I give advice about doing as many as possibly and in whichever order the students want.

Afterward we have discussions about which they find the easiest or can do the quickest.
Usually addition comes out the easiest until I suggest that if you know your tables that the multiplications are the easiest to do and probably the quickest as they don’t need working out. They get to realise that if they really know their tables that the divisions are quicker as they’re usually a single digit number to write as the answer.

In my mark book I record how many get correct out of how many they do and a time if they complete them all before the given time.

Most of the students really like doing this challenge. Improving their time/score is appears to motivate them. I have had quite a few students ask for sheets so they can practice at home.

Use the TABS on the spreadsheet to set the difficulty by changing the MAX and MIN values for each mathematical operation,
See the questions(recalculate if necessary ) and the answers for that set of questions.

It may be a good idea to PRINT SCREEN a set of answers if you intend to put the answer in a PowerPoint.

I usually print a few sets of answers off per table so they can mark their own. Sometimes I read them out.
If you cut the answer sheet into 4 strips, these strips can be placed/matched up against each column of students answer sheet and this is really easy for them to mark. Using this technique I have marked a full class of sheets in about 5 mins or so.

Another way to use this resource them would be to do them one/two columns/operations at a time and cut the time allowed.