Math Games

Grade 3 - Number

Standard 3.N.10 - Analyze and identify the property of multiplication shown in the equation.

Included Skills:

Apply mental mathematics strategies and number properties in order to understand and recall basic addition facts and related subtraction facts to 18.
• Achievement Indicators:
- 3N10.1 Explain or demonstrate the mental mathematics strategy that could be used to determine a basic fact, such as:
• using doubles; e.g., for 6 + 8, think 7 + 7
• using doubles plus one, plus two; e.g., for 6 + 7, think 6 + 6 + 1
• using doubles subtract one, subtract two; e.g., for 6 + 7, think 7 + 7 – 1
• making 10; e.g., for 6 + 8, think 6 + 4 + 4 or 8 + 2 + 4
• using addition to subtract; e.g., for 13 – 7, think 7 + ? = 13.
• using commutative property; e.g., for 3 + 9, think 9 + 3
• provide a rule for determining answers when adding and subtracting zero. When you add or subtract 0 to or from a number, the answer is the number you started with.
- 3N10.2 Recall doubles to 18 and related subtraction facts.
- 3N10.3 Recall compatible number pairs for 5 and 10.
- 3N10.4 Recall basic addition facts to 18 and related subtraction facts to solve problems.