Rounding to the nearest 100

Question

Hi there,

I have an arithmetic question in BrightSpace where students are required to round to the nearest hundred.

Round {a} to the nearest hundred.

I was just wondering what the formula should be for this question for it to work correctly. At the moment, the formula is round({a}), but all the answers are coming up as 0. Any advise on this would be greatly appreciated.

Thank you

Krizzy.S.9720 · Answer

Hello @Joseph.C.99!

You may need to reach out your institution's administrator (internally) so that they could help you raise a ticket! I will inbox you for more information.

Simultaneously, we feel that this is a very good idea so you can also request a round({a}) function through the Brightspace Product Idea Exchange (PIE). This is a helpful link to get started!

Joseph.C.99 · Answer

Thank you so much @Ron.W.451 and @Krizzy.S.9720. Both answers are very helpful. How do I raise a ticket with the D2L support team for this issue?

Ron.W.451 · Answer

From the Brightspace Question Editor documentation for the arithmetic question type (https://community.d2l.com/brightspace/kb/articles/2800-creating-question-library-questions#create-arithmetic-questions) the listed mathematical functions doesn't include a round({a}) function. You can also find the list of supported functions by selecting the ? button to the right of the formula field in the question builder.

In some situations you might be able to use the modulo operator as a work-around, but it would only work in situations where you know that the value must be rounded up, or must be rounded down.

For example, if you defined a to have a minimum of 100 and a maximum of 149, you would always be rounding down to 100 in that case. Then you can use the formula {a}-({a}%100).

Alternatively, if the variable was restricted to 250 to 299 you know that you are always rounding up to 300 in that instance, so you could use this formula {a}+(100-({a}%100)).

It wouldn't be a bad idea to request a round({a}) function through the Brightspace Product Idea Exchange (PIE) or upvote it if someone has already requested it.