abcteach
Abcteach: Number Puzzles
[Free Registration/Login Required] Solve the number puzzles as you practice basic addition skills and improve your number sense. The site has challenging activities with varying levels of difficulty.
Mr. Martini's Classroom
Mr. Martini's Classroom: Multiplying With Multiple Choice Answers
Practice multiplication facts 4 to 9 with this interactive multiple choice activity.
University of Regina (Canada)
University of Regina: Math Central: Sample Problems for Grades 1 5
The Saskatoon Board of Education gives samples of math word problems for pairs or small groups of students. At each grade level three types of problems are provided: translation, process, and realistic.