Students who do not know their facts are unable to efficiently solve 4th grade level problems.
4th grade level problems require mastery of these facts.
If you are behind (finger counting, tallying, relying on a multiplication chart) then you must study the 0-12 fact cards for 10 minutes every single day.
Websites for practice
www.gameaquarium.com/subtraction.html
www.gameaquarium.com/addition.html
www.multiplication.com
