Lesson 7 subtracting integers with an algorithm.notebook
November 12, 2015
11/12 Lesson 7: Subtracting Integers with an Algorithm
Use a chip model or number line to solve these problems.
1. Find the differences in each group below.
2. Describe what the examples in each group have in common.
3. Use your answer to part (2) to write two problems for each group.
4. Describe an algorithm for subtracting integers in each group.
Nov 8­8:09 PM
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Lesson 7 subtracting integers with an algorithm.notebook
November 12, 2015
5. Use the algorithm to answer these problems.
6. Check to see whether your strategy for subtraction of integers
works on these rational number problems:
8. The commutative property of addition allows the addends to switch but still result in the same sum. Example: 5 + 4 = 4 + 5. For parts (a) ­ (d), decide whether the expressions are equal.
e. Do you think there is a commutative property of subtraction?
Nov 8­8:22 PM
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Lesson 7 subtracting integers with an algorithm.notebook
November 12, 2015
Assignment: Lesson 7 Subtracting Integers with an Algorithm Worksheet Lessons 1 ­ 7 on Monday, November 16.
Notebook Quiz on Monday, November 16. Nov 8­8:56 PM
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