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Students will practice mental math and harness their discussion skills through addition problems of like mixed numbers. This lesson may be used on its own or as support for the lesson Adding Mixed Numbers Using the Decomposition Strategy.

Make the number work for you! Use this lesson to teach your students to add mixed numbers with like denominators using the strategy of decomposition.

Teach your students to subtract mixed numbers with like denominators using the strategy of decomposition. This strategy helps students to manipulate and break down numbers to help them solve tricky subtraction problems.