Below you will find a list of websites to support your child's numeracy skills
http://nlvm.usu.edu/ NLMV stands for National Library of Virtual Manipulatives. It is an interactive site. Chose the grade, chose the specific topic, a sub topic and practice, practice, practice. This is a great site for the visual and kinesthetic learner.
http://www.math-aids.com/ This website allows you to generate various worsheets and problems. You can pick the topic on the left side and then navigate thru all the tables or worksheet options. This is a good one to generate operations worksheets as well as word problems related to a selected operation.