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# 2 2 Pos Neg Numbers

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### 2 2 Pos Neg Numbers

1. 1. Chapter 2.2 Adding positive and negative numbers THS Algebra I
2. 2. Warm – Up <ul><li>Find the sums without calculators. </li></ul><ul><ul><li>868 + 75 = </li></ul></ul><ul><ul><li>Find differences without calculators </li></ul></ul><ul><ul><li>401 – 83 = </li></ul></ul>
3. 3. Warm – Up Answers <ul><li>Find the sums without calculators. </li></ul><ul><ul><li>868 </li></ul></ul><ul><ul><li>+ 75 </li></ul></ul><ul><ul><li>945 </li></ul></ul><ul><ul><li>Find differences without calculators </li></ul></ul><ul><ul><li>401 </li></ul></ul><ul><ul><li>– 83 </li></ul></ul><ul><ul><li>318 </li></ul></ul>1 1 9 3 10 11 / /
4. 4. Yesterday’s HW answers <ul><li>7) > 8)> 9)= </li></ul><ul><li>13) -418 19) 32 22 )-16 ½ </li></ul><ul><li>25) 17 26)100 29)13 ½ </li></ul><ul><li>30) 3 / 5 45) 6 46) – 2 / 5 </li></ul><ul><li>47) 16 48) 7 / 8 </li></ul><ul><li>1)50 2)56 4)162 </li></ul><ul><li>9)8 ½ 11)15 ½ </li></ul><ul><li>13) 33 16) 30 </li></ul><ul><li>19) 4(5-3)+2=10 </li></ul><ul><li>24) 6/3 + 3(5) = 17 </li></ul><ul><li>27) (3+6)/5=1 2 / 5 OR 1.8 </li></ul><ul><li>6,12,18,24,30,36 </li></ul><ul><li>3) 27,33,39,45,51,57 </li></ul><ul><li>13) 3 </li></ul><ul><li>15) 2 </li></ul>
5. 5. Add positive and negative numbers <ul><li>Let’s use different colored buttons to show </li></ul><ul><li>-7 + (+4) </li></ul><ul><li>How do 7 red buttons match up with 4 ? </li></ul><ul><li>How many remain? 3 positive or 3 negatives? </li></ul><ul><li>-7 + (+4) = 3 negatives </li></ul>
6. 6. Add positive and negative numbers
7. 7. Add positive and negative numbers
8. 8. Go Tigers THS