2.1+Adding+on+a+Number+Line+-

MC Big Idea Negative numbers help us to model many real world situations. Ans.a) The addition sentences: 1. -3+(-4)= **-7** 2. -3+4= **1** 3. -4+11= **7** 4. 5+(-8)= **-3** Ans.b)
 * Essential Question #2: How can I add integers?**
 * Notes from class: The nuber lines, there can also be vertical number lines.**
 * QA. Write the addition sentences illustrated by each figure.**
 * QB. Illustrate each addition problem on a number line, and give the answers.**
 * 1. -5+8 2. -4+-3 3. -2+-3+10**

So, at the end we can say that the order of the number don't make a difference when we add two integers. Q1.**You can think of scoring in MathMania as follows: When a team answers a question correctly, a positive integer is added to their score. When a team aswers a question incorrectly, a negative integer is added to their score. For each of the following situation, write an addition sentence that will give the team's score. Assume each team starts with 0 points.** Ans. a) Brainacs= 0+200+(-150) = 50 points b) Aliens= 0+100+(-100) = 0 points c) Prodigies= 0+(-50)+(-100)=250 =100 points a) -2+2 b)8+-8 c) -1+1 Q3. What happens when you add opposites? Explain how you know your answer is correct.** Ans. When we add opposites the answer comes into 0 unit, because the positive number and the negative number of the same number cancle each other.
 * QC. When you add two integers, does the order of the numbers make a difference? Illustrate your answers by showing each of these pairs of sums on a number line.**
 * 1. -5+10 and 10+-5 2. -4+-6 and -6+-4**
 * 3. 8+-8 and -8+8 4.6+-7 and -7+6**
 * //__2.1 FU__//**
 * a) The Brainacs answers a 200-point question correctly and a 150-point question incorrectly.**
 * b) The Aliens answer a 100-point question correctly and a 100-point question incorrectly.**
 * c) The Prodigies answer a 50-point question incorrectly, a 100-point question incorrectly, and a 250-point correctly.**
 * Q2. Illustrate each addition problem on a number line and give the answers.