|Killing Event||Verse||Estimated number killed||Cumulative total|
|2||Egyptian firstborn||Exodus 12:29-30||1,000,000||1,300,000|
|3||Egyptian army||Exodus 14:24-25||5,000||1,305,000|
|5||God forced Israelites to kill each other as punishment for Aaron's golden calf||Exodus 32:26-28||3,000||1,309,000|
|6||God sends a plague to punish the Israelites (again) for Aaron's golden calf||Exodus 32:35||1,000||1,310,000|
So in Exodus, there were 6 killing events and an estimated total of 1.3 million or so.
And now on to Leviticus.