2nd grade learns facts 0-18 addition-commit to memory-can do 100 problems in 5 minutes

3rd grade learns facts 0-5 multiplication, can do 100 addition or 100 subtration in 5 minutes

4th grade learns facts 0-12 multiplication & division-commit to memory-can do 100 facts in 5 minutes

5th grade learns all facts-can do 100 addition, subtraction, multiplication, or division facts in 5 minutes