Grade 3 - Number
Standard 3.N.10 - Use properties of addition to find the missing number of an equation.
Included Skills: Number Properties, Addition
Apply mental mathematics strategies and number properties, such as: • using doubles to recall basic addition facts to 18 and related subtraction facts. • making 10 to recall basic addition facts to 18 and related subtraction facts. • using the commutative property to recall basic addition facts to 18 and related subtraction facts. • using the property of zero to recall basic addition facts to 18 and related subtraction facts. • thinking addition for subtraction to recall basic addition facts to 18 and related subtraction facts.