Grade 3 - Number
Standard 3.N.10 - Analyze and identify the property of multiplication shown in the equation.
Included Skills: Number Properties, Multiplication
Apply mental mathematics strategies and number properties, such as: • using doubles • making 10 • using the commutative property • using the property of zero • thinking addition for subtraction to recall basic addition facts to 18 and related subtraction facts. • Achievement Indicators - Describe a mental mathematics strategy that could be used to determine a given basic fact, such as: • doubles, e.g., for 6 + 8, think 7 + 7 • doubles plus one, e.g., for 6 + 7, think 6 + 6 + 1 • doubles take away one, e.g., for 6 + 7, think 7 + 7 – 1 • doubles plus two, e.g., for 6 + 8, think 6 + 6 + 2 • doubles take away two, e.g., for 6 + 8, think 8 + 8 – 2 • making 10, e.g., for 6 + 8, think 6 + 4 + 4 or 8 + 2 + 4 • commutative property, e.g., for 3 + 9, think 9 + 3 • addition to subtraction, e.g., for 13 – 7, think 7 + ? = 13. - Provide a rule for determining answers for adding and subtracting zero. - Recall basic addition facts to 18 and related subtraction facts to solve problems.