Addition 1.. Tens and Units (Example: 26 + 12)
http://www.showme.com/sh/?h=
Subtraction 1.. Tens and Units (Example: 47 – 23)
http://www.showme.com/sh/?h=
Subtraction 2.. Using “Renaming of Tens” (Example: 63 – 25)
http://www.showme.com/sh/?h=
Subtraction 3.. Using “Renaming of both Hundreds and Tens” (Example: 300 – 157)
http://www.showme.com/sh/?h=
Short Multiplication 1..
http://www.showme.com/sh/?h=v0rleYC
Short Multiplication 2..
http://www.showme.com/sh/?h=gNQ9toG