add up to意思是加起来是；add to意思是增加。
1、add something to something 添加、增加……到……中=to put something with another thing or group of things。
2、add to something to something增添了（情感、品质）给……=to make somethingsuch as a feeling or a quality greater or more extreme。
3、add in something包括……在内=include。
例如：The figures add up to 500.
这些数字加起来等于500。
The costs added up to 1000 dollars.
费用总计为1000美元。
扩展资料
add的用法：
1、add in 包括。
如：Don’t forget to add me in.
别忘了把我也算上。
Would you add in these items, please?
请你把这些条款包括进去好吗?
2、add up 加起来。
如：You haven’t added the figures up right.
这些数字你没有加对。
有意义，有道理。如：
His excuse just doesn’t add up.
他的借口完全站不住脚。
What he said doesn’t add up.
他说的话自相矛盾。
3、add that... 补充说······
Everyone will be invited to vote, he said, adding that voting is likely to be via the web.
他说所有人都会被邀请来投票，并且补充说投票可能通过网络进行。
add up to[英] [æd ʌp tu:] [美] [æd ʌp tu] 总计达；<口>等于； 意味着； 总起来说；本回答被提问者和网友采纳
增加
例句
I have nothing to add to my earlier statement.
我对我先前说的话，没有什么补充的。
Being still hale and hearty in spite of his seventy years, my father was able to add to his pension by selling vegetables from his garden.
我的父亲尽管70高龄，身体仍很硬朗，还能把菜园子里的菜挑出去卖，以挣些零化钱。
add up to
合计达（多少）
例句
I don't think these facts will add up to anything.
这些事实我看不说明任何问题。
These numbers add up to 100.
这些数目合计为100.