Homework Explained - Math Practice 101

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Grade 7 HMH Go Math - Answer Keys


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  Independent Practice  

  • Question 7 (request help)

    Describe how to model -3x + 7 = 28 with algebra tiles.

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  • Question 8 (request help)

    Val rented a bicycle while she was on vacation. She paid a flat rental fee of $55.00, plus $8.50 each day. The total cost was $123. Write an equation you can use to find the number of days she rented the bicycle.

  •     days
  • Question 9 (request help)

    A restaurant sells a coffee refill mug for $6.75. Each refill costs $1.25. Last month Keith spent $31.75 on a mug and refills. Write an equation you can use to find the number of refills that Keith bought.

  •     refills
  • Question 10 (request help)

    A gym holds one 60-minute exercise class on Saturdays and several 45-minute classes during the week. Last week all of the classes lasted a total of 285 minutes. Write an equation you can use to find the number of weekday classes.

  •     classes
  • Question 11 (request help)

    Multiple Representations

    There are 172 South American animals in the Springdale Zoo. That is 45 more than half the number of African animals in the zoo. Write an equation you could use to find n, the number of African animals in the zoo.

  •     animals
  • Question 12 (request help)

    A school bought $548 in basketball equipment and uniforms costing $29.50 each. The total cost was $2,023. Write an equation you can use to find the number of uniforms the school purchased.

  •     uniforms
  • Question 13 (request help)

    Financial Literacy

    Heather has $500 in her savings account. She withdraws $20 per week for gas. Write an equation Heather can use to see how many weeks it will take her to have a balance of $220.

  •     weeks
  • Question 14 (request help)

    Critique Reasoning

    For 9x + 25 = 88, Deena wrote the situation “I bought some shirts at the store for $9 each and received a $25 discount. My total bill was $88. How many shirts did I buy?”

    a. What mistake did Deena make?

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  • Question 14 (request help)

    b. Rewrite the equation to match Deena’s situation.

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  • Question 14 (request help)

    c. How could you rewrite the situation to make it fit the equation?

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