The only way you can get apps to run from your SD card would be if the tablet is running Android "Marshmallow" or you can upgrade to it. Also, your device will have to have not had that ability restricted on it by the manufacturer. They do that. If you have or can upgrade to "Marshmallow", then try the instructions below.
How to turn external SD card into internal storage on "Marshmallow".
NOTE: Please be sure you start with a blank SD card. It needs to be blank because when the card is converted to "Internal" storage, it will be formatted (wiped) and encoded (making the cards data only readable by that device).
1. Go to device “Settings”, then select “Storage”.
2. Select your "SD Card", then tap the “three-dot menu“ (top-right)...