Rational numbers

This packet contains a curriculum-­embedded, Common Core–aligned task and instructional supports. The task is embedded in a 3-­week unit on the number system. This mathematics unit builds on previous 6th-grade units on rational numbers: ordering rational numbers and placing them on a number line, understanding absolute value, and representing quantities in real-world contexts. The unit provides students with the opportunity to deepen their understanding of rational numbers in various forms. Furthermore, this unit allows students to add, subtract, multiply, and divide rational numbers in various forms. The unit following this topic should focus on strategically applying properties of operations to add and subtract expressions with rational coefficients. In this this task students will have to determine which of two businesses is making a profit by calculating the costs of supplies and wages as well as the profit. The costs and profit require calculations of rational numbers that include negative and positive numbers, fractions, and decimals.

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