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Objective The student will be able to:

Objective The student will be able to:. add and subtract rational numbers. compare and order rational numbers. SOL: none. Designed by Skip Tyler, Varina High School. 2). Find the sum . 1) -2.304 + (-0.26). Line up the decimals and add (same signs). -2.564.

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Objective The student will be able to:

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  1. ObjectiveThe student will be able to: add and subtract rational numbers. compare and order rational numbers. SOL: none Designed by Skip Tyler, Varina High School

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

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

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

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

  6. Answer Now Find the solution6.5 – 9.3 = ? • -3.2 • -2.8 • 2.8 • 3.2

  7. Answer Now Find the solution • .

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

  9. Inequality Symbols

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

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

  12. 7 1 1 or 4 6 42 44 < 24 24 Which rational number is bigger? • Get a common denominator • or convert to a decimal 1.75 < 1.83

  13. 5 3 __ 7 4 Answer Now Which symbol makes this true? • < • > • =

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

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