Evaluate the expression: 2(10−2)÷ ÷ ÷4 16÷4 =4

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Presentation transcript:

Evaluate the expression: 2(10−2)÷ 2 2 2 8 ÷ 2 2 2 8 ÷4 16÷4 =4 Problem of the Day

Review 1. Estimate the value of 72 2. What is 4.03 as a percent and fraction? Review

Adding Integers and Rational Numbers What happens with you add or subtract integers?

Integers: a member of the set of whole numbers and their opposites Integers: a member of the set of whole numbers and their opposites. (Ex: 1, 100, -1, 0, -100, etc.) Rational Numbers: any number that can be expressed as a ratio of two integers. (Ex: 1 3 , 24 2 , − 3 4 , etc.) Key Terms

Modeling Adding Integers 3+4 =7 −5+(−3) =−8 Modeling Adding Integers

Modeling Adding Integers 3+(−2) =1 Modeling Adding Integers

−7+ −6 =−13 Addition of Integers

Applying Addition −5+ −4 −15+71 −52+ −48 −79+79 −25+50 −4+ −5 + −6 15+ −15 +200 −500+ −600 +1200 Applying Addition

Adding Rational Numbers Find the sum: 3 1 8 + 3 4 + −2 1 6 3 1 8 + 3 4 →3 1 8 + 6 8 =3 7 8 3 7 8 +(−2 1 6 ) 3 21 24 + −2 4 24 =1 17 24 Adding Rational Numbers

3 2 + − 6 5 6 3 + − 1 6 − 5 9 + − 7 12 − 7 12 + 3 8 Applying

Adding and Subtracting Rational Numbers Worksheet Independent Work