Mrs. Sanford is working on creating PowerPoint presentations with her math students. The students are using arrays to create multiplicative and additive word problems to correlate with the image selected by the student. Each array will also have the “fact family” itemized.
Use the four operations with whole numbers to solve problems.
• CCSS.Math.Content.4.OA.A.1 Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations.
• CCSS.Math.Content.4.OA.A.2 Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison.1
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