One Atta Time Flash Cards Distance Learning Create New Sheet Customize Problems Select a Worksheet > Version 1 Version 2 Version 3 Version 4 Version 5 Version 6 Version 7 Version 8 Version 9 Version 10 Grab 'em All Find Missing Fact (Multiple Choice) Use the numbers in a fact family to write the matching addition and subtraction equations.Use what you know about addition and subtraction being opposites to choose the correct missing fact.