warm up real world integers - output answer the questions below on the output side. suppose you...
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Warm UpReal World Integers - Output
Answer the questions below on the OUTPUT side. • Suppose you received $10 from your
grandmother for your birthday. You spent $4 on snacks. Using addition, how would you write a number sentence to represents this situation?
• How would you model your equation on a number line to show your answer?
Lesson 2 & 3: Using the Number Line to Model the Addition of Integers
Objective:• I can explain the addition of rational
numbers, in terms of distance, using a number line.
• I can interpret sums of rational numbers by describing real-world contexts.
Example 1: Modeling Addition on a Number Line
1. Find a partner with the same card number as you, determine who will be A and who will be B.
2. A will stand first. Partner A needs to tell partner B how model the addition on the number line. Partner B can not speak and Partner A can not write.
3. When finished with the first problem, switch roles and answer the second problem.
4. Answer the question at the bottom.-7 + 4
4 + (-7)
What can you say about the sum of −7 + 4 and 4 + (−7)? Does order matter when adding numbers? Why or why not?
Practice (on number lines handout)
On your “number lines” sheet, construct and complete the following…• -6 + 4
• 3 + (-8)
The first number is referred to as the p-value (p). The second number is referred to as q. Therefore simple addition is p + q.
What if we thought like this…..
What would I say here in terms of p-value?
What would I say here in terms of p-value?
THINK with your group….• How can we use a number line to model
and find the sum of −8 + 5?
• What does the absolute value of a number tell us about the arrows when modeling addition on a number line?
• How is the sum of two rational numbers related to distance?
• How are sums of rational numbers used in the real-world?