1. Common Core Standard: 7.NS.1 Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram. Adding and Subtracting Rational Numbers

2. 1.add and subtract rational numbers. 2.compare and order rational numbers. Objective The student will be able to:

3. Find the sum. 1) -2.304 + (-0.26) Line up the decimals and add (same signs). -2.564 2) Get a common denominator and subtract.

4. Find the difference. 3) Change subtraction to adding the opposite. Get a common denominator. Subtract and keep sign of the larger number.

5. Find the difference. 4) Get a common denominator and subtract. Change subtraction to adding the opposite.

6. Substitute for y: 6.32 - (-3.42) 6.32 + 3.42 9.74 5) Solve 6.32 – y if y = -3.42

7. Find the solution 6.5 – 9.3 = ? Answer Now 1.-3.2 2.-2.8 3.2.8 4.3.2

8. Find the solution Answer Now 1.. 2. 3. 4.

9. A rational number is a number that can be written as a fraction. How can these be written as a fraction? 3 =

10. Inequality Symbols

11. Ordering Rational Numbers 2 ways to order from least to greatest 1.Get a common denominator 2.Change the fractions to decimals (numerator  demoninator)

12. Which rational number is bigger? 1) Get a common denominator. 2) or convert the fraction to a decimal. 0.363 < 0.375 4 11 < 3 8

13. Which rational number is bigger? 1)Get a common denominator 2)or convert to a decimal 1.75 < 1.83 7 4 or 11 6 42 24 < 44 24

14. Which symbol makes this true? 5 7 __ 3 4 1.< 2.> 3.= Answer Now

15. Which symbol makes this true? -2 9 __ 4 1.< 2.> 3.= Answer Now