曾有考生说ACT数学也就相当于中国初中数学的难度，只要能看懂单词，正确率可以达到百分之百，拿不到满分都算是失败，整个ACT考试数学是最容易的。因此，数学考试词汇也成了ACT数学的重中之重，接下来就是列举的一些重点词汇：
1) 因果关系：
连词：because;since;as;for;in that;so
介词：owing to;due to;for the reason that...;
副词：therefore;consequently;as a result;thus;hence;accordingly
2) 转折关系：
连词：but;yet;and yet
副词：however;
3)让步关系：
连词：although，;even though;though
副词：nonetheless，nevertheless
介词：despite
词组：even so
4) (补充)递进关系：
副词：furthermore;moreover;further
词组：in addition (to);much more interesting
5) 对照(不同点)：
连词：whereas
副词：rather;conversely
词组：as opposed to this;in contrast (to);on the contrary
6) 举例关系：
介词：like;such as;including...
词组：for example;for instance;in particular;
7) 强调关系：
副词：especially;particularly;moreover;undoubtedly
词组：what is more important;indeed; not to mention...;
8) 归纳总结：
词组：in brief / in conclusion / in summary/ to sum up / to conclude。