Course 1, Lesson 9, The Number Line: Ordering and Comparing

Course 1, Lesson 9, The Number Line: Ordering and Comparing

Author: Hector Soto

1. Fluently divide multi-digit numbers using the standard algorithm. 2. Interpret statements of inequality as statements about the relative position of two numbers on a number line diagram. For example, interpret -3 > -7 as a statement that -3 is located to the right of -7 on a number line oriented from left to right. 3. Write, interpret, and explain statements of order for rational numbers in real-world contexts. For example, write -3 ?C > -7 ?C to express the fact that -3 ?C is warmer than -7 ?C. 4. Write expressions that record operations with numbers and with letters standing for numbers. 5. Understand solving an equation or inequality as a process of answering a question: which values from a specified set, if any, make the equation or inequality true? Use substitution to determine whether a given number in a specified set makes an equation or inequality true. 6. Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.

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The Number Line: Ordering and Comparing

Source: Hector Soto