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5–5 Adding and Subtracting Mixed NumbersMAIN IDEA• Add and subtractmixed numbers.KEY CONCEPTAdding and SubtractingMixed Numbers To addor subtract mixednumbers, first add orsubtract the fractions.Then add or subtract thewhole numbers. Renameand simplify if necessary.EXAMPLES Add or Subtract Mixed NumbersFind 6 7 _8 - 3 1 _8 . Estimate - =Subtract the Subtract thefractions.whole numbers.6 _ 7 6 _ 788- 3 1_- 3 1_____ 8 ____ 8orCheck for Reasonableness 3 3 _4 ≈ 4 ✔Find 3 1 _5 + 5 3 _4 . Estimate + =Write the problem.3 1_5_ 1 × 45 × 4+ 5 _ 3 _ 3 × 5_______4 4 × 5Rename the fractionsusing the LCD, 20.3+ 5_____Check for Reasonableness 8 19 _20 ≈ 9 ✔Check Your Progresssimplest form.a. 8 _ 7 9 - 5 4_9Add the fractions.Then add thewhole numbers.+_____Add or subtract. Write inb. 3 _ 3 8 + 6 1_3Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.124 Math Connects, Course 1