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Included is a 2-page assignment with 18 problems that help students practice rewriting addition expressions using the distributive property and greatest common factor. The directions ask students to find the GCF using the ladder method, then use the GCF and the factors of the numbers to rewrite the problem to prove these properties. The students are also asked to prove their answer by showing that the original expression and their new expression are equivalent.
A key with the answers is included as well.