If you had already installed these apps previously on your iPad 2, go the App Store app.
In the App Store app, look for the Purchased tab/name in the bottom menu.
Tap on Purchase, look for the apps you have already purchased, the ones you are looking for should appear in the Purchased tab/section/button in the iOS App Store app on the older iPad model.
Then, try tapping the download “cloud” icon next to the app, in this location, to see if the small window pop-up prompt that states that there is an older version of the app that is compatible with your device. Would you like to download this version now?
Tap the OK button just below the prompt to start the downloading of the older app version to your iPad.
Good Luck to You!