Chapter 3

Understanding Multiplication

How can you use multiplication to find how many in all?

3.OA.A.1 I can interpret products of whole numbers, e.g, interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each.

3.OA.A.3 I can use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

3.OA.B.5 I can apply properties of operations as strategies to multiply and divide.

3.OA.D.8 I can solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.