My 5th grader (11) and my 4th grader (9) are both using Singapore 5A for math. (Just the normal workbook. Not the IP or CWP.)

Daily, they miss __more than hal__f of their problems on their math workbook assignments. I am wondering if this is normal? If not, what can I do to correct it?

I __always__ grade their math right away and have them fix any problems they miss. And they typically can always fix them. (Sometimes it takes a few attempts.)

**Additional Information:**

- They understand the math. They are just making mistakes. (Example: Subtracting incorrectly. Forgetting to add the digits that they carried when multiplying. Writing too sloppy. Etc. etc. )
- This is not a new problem. This has been ongoing for years. Looking back on their past workbooks, they are missing more than half the problems each day for YEARS. (And then then they go back and fix until 100%.)
- My fear is that I have done something inadvertently to cause (or allow) careless work in math. If they are both doing the same thing, that probably means it is an instructional problem....right? Where did I go wrong, and what can I do at this point considering we might have some deeply ingrained bad math habits.
- I don't think the problem is specific to Singapore math. I've tried giving them worksheets from math mammoth, and the same thing happens.
- They even do the same thing with easier problems. For example, I even had them go back and complete the 4th grade math mammoth review workbook just to try and get them used to not being careless with easier problems. Daily, they still missed about half the problems and would do their math assignments twice.

**My concerns:**

**Wasted instructional time:**Today, for example, my 11 year old spent about 60 minutes to do 8 long division problems (with remainder). He got 3 of them correct. My 9 year old got 4 of them correct. That is less than 50%. So we graded the page and I had them fix the incorrect problems. They spent about another 45 mins fixing the math problems. Because they are getting so many incorrect, they essentially have to do their math assignments twice*every*day. That makes for a LOOOOOONG day for them. (And I am only assigning 8 problems!) I was hoping that fixing their math everyday and redoing it would eventually teach them to be careful and try their best the fist time, but that doesn't seem to be working.**(After years of trying this same approach, I think I need to try something new.)**In the past my theory has been that they just need more practice. So I have assigned them more problems of the same type. But the same thing just keeps happening day after day after day.**Future math classes:**Someday, they might need to take an outside class for math. I am worried that poor math habits will effect their grade. Imagine if they get a 40% on every homework assignment?

Any other ideas on things I can do?