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Related Standards
2009 SOL 2.21
The student will solve problems by completing
numerical sentences involving the basic facts for addition and
subtraction. The student will create story problems, using the
numerical sentences.
2009 SOL 2.22
The student will demonstrate an understanding
of equality by recognizing that the symbol = in an equation
indicates equivalent quantities and the symbol ≠ indicates that
quantities are not equivalent.
2009
SOL 3.2
The student will recognize and use the inverse
relationships between addition/subtraction and
multiplication/division to complete basic fact sentences. The
student will use these relationships to solve problems.
2009 SOL 3.5
The student will recall multiplication facts
through the twelves table, and the corresponding division facts.
Common Core Standard 3.OA.4
Determine
the unknown whole number in a multiplication or division equation
relating three whole numbers.
Assessments
Examples:
6 x 3 = ?  ? ÷ 6 = 3  6 x ? = 18  18 ÷ 6 = ?  ? x 3 = 18  18 ÷ 3 = ? 
? = 6 x 3  3 = ? ÷ 6  18 = 6 x ?  ? = 18 ÷ 6  18 = ? x 3  ? = 18 ÷ 3 
HoughtonMifflin Expressions
Assessment
Resources
G3 Homework 7.4
Assessment Suggestions
Informal Checks for Understanding:
When working with fact triangles, instead of asking students to find
a missing number, just cover up one of the numbers and ask students
to write the equation that they see (note that some students may see
a multiplication equation while others may see a division equation
for the same example).
Academic Prompts:
Ask students to choose a multiplication/division fact family and then
write four different open number sentences (i.e., equations with a
missing number  see examples above) for that fact family.
Quiz and Test Items:
MCPS Sample Items
HoughtonMifflin Expressions
Teaching
Resources
Related
Units:
Grade
2 Unit 13 (p. 953A)
Grade 3 Unit 7 (p. 457A)
Once the online TE opens, type in the
desired page number.
Some Suggestions:
Grade 3 Unit 7
 Lesson 4 (Activity 3): Relates
multiplication and division equations for multiples of 5.
Student Activity Book p. 219
Additional Teaching
Resources

elementarysoftware.com:Terrific
Triangles

Fact Triangles SMART Notebook Activity

nrich.maths.org:Number
Balance (Check out the video below.)