In this unit, students focus on identifying patterns and developing strategies for solving the multiplication facts and the related division facts. Students revisit and extend strategies such as repeated addition and skip counting. The rectangular array model is introduced to support students' reasoning from known facts to find a product (break-apart products). This model is used to explore the relationship between multiplication and division and turn-around facts. Students learn how to identify and use the multiplication properties of zero and one.

EXPECTATIONS
E1*	Represent multiplication and division problems with number lines, drawings, rectangular arrays, and number sentences.
E2*	Use strategies to solve multiplication and division problems (e.g., skip counting, repeated addition, repeated subtraction, reasoning from known facts, and invented).
E3*	Use the multiplication properties of 0 and 1 to solve multiplication problems.
E4*	Use turn-around facts to solve multiplication problems (applying the commutative property of multiplication).
E5*	Identify and use patterns to solve the multiplication facts for the 2s, 3s, 5s, 10s, 9s, and square numbers.
E6	Break products into the sum of simpler products to solve multiplication problems (applying the distribute property of multiplication over addition).
E7	Multiply numbers that are multiples of 10.
E8	Use patterns in data tables to make predictions and solve problems.
E9	Measure length to the nearest inch.
E10*	Use mental strategies to subtract for the facts in Groups 5–8.
E11*	Determine the unknown number in an addition or subtraction sentence relating three whole numbers for the facts in Groups 5–8.
E12*	Demonstrate fluency with the multiplication facts for the 5s and 10s.
E13*	Determine the unknown number in multiplication and division sentences relating three whole numbers for the 5s and 10s.
	* Denotes Benchmark Expectation