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# 2 2 Pos Neg Numbers

## by taco40 on Sep 18, 2008

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## 2 2 Pos Neg NumbersPresentation Transcript

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