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

Line up the decimals and add (same signs). -2.564 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.

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

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

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

Find the solution 6.5 – 9.3 = ? -3.2 -2.8 2.8 3.2 Answer Now

Find the solution . Answer Now

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

Inequality Symbols

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

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

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

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

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