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Writing Inequalities: Classroom Packet

Grade 8 Algebra: Writing Inequalities

Name: ______________________Date: ____________Score: ____ / 6

Level 1

Simple statements

  1. 1. Write an inequality:
    xx\text{}is\text{is}greater\text{greater}than\text{than}5\text{5}
  2. 2. Write an inequality:
    yy\text{}is\text{is}less\text{less}than\text{than}3\text{3}
  3. 3. Write an inequality:
    nn\text{}is\text{is}at\text{at}least\text{least}10\text{10}
  4. 4. Write an inequality:
    mm\text{}is\text{is}at\text{at}most\text{most}7\text{7}
  5. 5. Write an inequality:
    kk\text{}is\text{is}no\text{no}more\text{more}than\text{than}4\text{4}
  6. 6. Write an inequality:
    pp\text{}is\text{is}more\text{more}than\text{than}-2\text{-2}

Answer Key

Level 1

  1. 1. x>5x > 5
  2. 2. y<3y < 3
  3. 3. n≥10n \ge 10
  4. 4. m≤7m \le 7
  5. 5. k≤4k \le 4
  6. 6. p>−2p > -2

Grade 8 Algebra: Writing Inequalities

Name: ______________________Date: ____________Score: ____ / 6

Level 2

Expressions with operations

  1. 1. Write an inequality:
    twice\text{twice}a\text{a}number\text{number}xx\text{}is\text{is}greater\text{greater}than\text{than}12\text{12}
  2. 2. Write an inequality:
    a\text{a}number\text{number}nn\text{}plus\text{plus}4\text{4}is\text{is}less\text{less}than\text{than}9\text{9}
  3. 3. Write an inequality:
    5\text{5}less\text{less}than\text{than}yy\text{}is\text{is}at\text{at}least\text{least}8\text{8}
  4. 4. Write an inequality:
    the\text{the}quotient\text{quotient}of\text{of}mm\text{}and\text{and}3\text{3}is\text{is}at\text{at}most\text{most}6\text{6}
  5. 5. Write an inequality:
    3\text{3}times\text{times}k,k\text{,}minus\text{minus}1,\text{1,}is\text{is}greater\text{greater}than\text{than}11\text{11}
  6. 6. Write an inequality:
    half\text{half}of\text{of}pp\text{}is\text{is}no\text{no}less\text{less}than\text{than}4\text{4}

Answer Key

Level 2

  1. 1. 2x>122x > 12
  2. 2. n+4<9n + 4 < 9
  3. 3. y−5≥8y - 5 \ge 8
  4. 4. m3≤6\dfrac{m}{3} \le 6
  5. 5. 3k−1>113k - 1 > 11
  6. 6. 12p≥4\tfrac{1}{2}p \ge 4

Grade 8 Algebra: Writing Inequalities

Name: ______________________Date: ____________Score: ____ / 6

Level 3

Real-life situations

  1. 1. Write an inequality:
    You\text{You}must\text{must}be\text{be}at\text{at}least\text{least}48\text{48}inches\text{inches}tall\text{tall}to\text{to}ride.\text{ride.}Use\text{Use}hh\text{}for\text{for}height.\text{height.}
  2. 2. Write an inequality:
    A\text{A}bag\text{bag}can\text{can}hold\text{hold}at\text{at}most\text{most}20\text{20}pounds.\text{pounds.}Use\text{Use}ww\text{}for\text{for}weight.\text{weight.}
  3. 3. Write an inequality:
    The\text{The}speed\text{speed}limit\text{limit}is\text{is}65\text{65}miles\text{miles}per\text{per}hour.\text{hour.}Your\text{Your}speed\text{speed}ss\text{}cannot\text{cannot}be\text{be}more.\text{more.}
  4. 4. Write an inequality:
    Tickets\text{Tickets}cost\text{cost}8\text{8}dollars\text{dollars}each\text{each}and\text{and}you\text{you}have\text{have}50\text{50}dollars.\text{dollars.}Use\text{Use}tt\text{}for\text{for}tickets.\text{tickets.}
  5. 5. Write an inequality:
    You\text{You}want\text{want}to\text{to}earn\text{earn}more\text{more}than\text{than}100\text{100}dollars\text{dollars}at\text{at}12\text{12}dollars\text{dollars}per\text{per}hour.\text{hour.}Use\text{Use}hh\text{}for\text{for}hours.\text{hours.}
  6. 6. Write an inequality:
    A\text{A}plan\text{plan}costs\text{costs}20\text{20}dollars\text{dollars}plus\text{plus}5\text{5}dollars\text{dollars}per\text{per}GB\text{GB}g,g\text{,}and\text{and}must\text{must}stay\text{stay}under\text{under}45\text{45}dollars.\text{dollars.}

Answer Key

Level 3

  1. 1. h≥48h \ge 48
  2. 2. w≤20w \le 20
  3. 3. s≤65s \le 65
  4. 4. 8t≤508t \le 50
  5. 5. 12h>10012h > 100
  6. 6. 20+5g<4520 + 5g < 45