Add punctuation: Chromebooks can save you about 5000 per computer over 3 years when compared to traditional PCs
A: Chromebooks can save you about $5,000 per computer over 3 years when compared to traditional PCs.

Add punctuation: Any four stacked WILD appearing on the MAIN REEL SET starts a symbol transfer turning the corresponding reel on the COLOSSAL REEL SET into WILD
A: Any four stacked WILD appearing on the MAIN REEL SET starts a symbol transfer, turning the corresponding reel on the COLOSSAL REEL SET into WILD.

Add punctuation: Considerably more colloids were generated on the ploughed columns than on the minimally treated
A:
Considerably more colloids were generated on the ploughed columns than on the minimally treated.