Multiplication
http://www.multiplication.com/games/play/sketchs-world-multiplication
http://www.fun4thebrain.com/multiplication/applemult.html
http://www.fun4thebrain.com/multiplication/farmescapemult.html
http://www.mathplayground.com/ASB_TugTeamMultiplication.html
Multiplication Extension
http://www.hoodamath.com/games/penguinjumpmultiplication.html
Maths: Time
http://mrnussbaum.com/clockworks/
http://www.abcya.com/telling_time.htm
http://www.bbc.co.uk/bitesize/ks1/maths/telling_the_time/play/popup.shtml
http://www.ictgames.com/hickory4.html
Measurement
Grams:
http://www.ictgames.com/mostlyPostie.html
Centimeters:
http://mathszone.net/mw/ruler/ruler_cm.swf
Liters: