Based on the context and the answer, generate a question. 

Context: The rest was not bad at all , although I thought I was going to get a 21 + on this section , so I must have been over confident . QR : This section obviously killed me , not because it was hard at all , but because it was fast . It seemed that all my problems involved long division to get decimals and took 2 min plus a problem .

Answer:

I struggled with the math part of the exam .



What type of comprehension was tested on the part of the exam I struggled with ?