math

Tom is showing his work in simplifying (5.2 – 8.5) – 0.5 + 6.8. In which step did Tom make an error?

Step 1:: (5.2 – 8.5) – 0.5 + 6.8

Step 2: 5.2 + (–8.5 – 0.5) + 6.8 (distributive property)

Step 3: 5.2 – 9 + 6.8

Step 4: 5.2 + 6.8 – 9 (commutative property)

Step 5: 12 – 9 = 3

  1. 👍
  2. 👎
  3. 👁
  1. In step 2.

    5.2 + ( – 8.5 – 0.5 ) + 6.8

    This is associative property, because he just ragrouped the terms.

    1. 👍
    2. 👎
  2. thanks

    1. 👍
    2. 👎
  3. chii[ken nw993t

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    Tom buys a shirt for $22.00 plus 7% sales tax. His cousin buys a shirt for $18.00 plus 4% sales tax. a. How much do Tom and his cousin pay for the shirts? Show your work b. Who spent more on tax My answers Tom: $22.00*7%=1.54

  2. physics

    Tom the cat is chasing Jerry the mouse across a table surface 1.5 m off the floor. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 5.0 m/s. Where will Tom strike the floor, and

  3. English

    1. He is less tall than Tom. 2. Tom is taller than he. 3. He is less smart than Tom. 4. Tom is smarter than he. 5. He is less big than Tom. 6. Tom is bigger than he. 7. He is less careful than Tom. 8. Tom is more careful than he.

  4. Math Help

    Tom buys a shirt for $22.00 plus 7% sales tax. His cousin buys a shirt for $18.00 plus 4% sales tax. a. How much do Tom and his cousin pay for the shirts? Show your work b. Who spent more on tax My answers $22.00*7%=1.54

  1. math

    Bob's age is now 3 times of Tom's age. Twelve years from now, tom will be 15 years old. How old is Bob now? please explain and show work

  2. Language arts

    In which of the following sentences is a past participle used? By Saturday, Tom had watched every comedy he owned.* Tom is watching sci-fi and action movies this week. Tom watched 15 movies in just one week. My brother Tom watches

  3. english

    Make any necessary corrections to the following paragraph- look for sound alike words, verb tense shift, singular subject/pronoun agreement etc… Tom Greene, Director of Sales, was in the office yesterday. He shows the staff

  4. physics

    Tom has a mass of 69.0 kg and Sally has a mass of 54.0 kg. Tom and Sally are standing 20.0 m apart on the dance floor. Sally looks up and sees Tom. She feels an attraction. If the attraction is gravitational, find its size. Assume

  1. physics

    Tracy (of mass 49 kg) and Tom (of mass 65 kg) are standing at rest in the center of the roller rink, facing each other, free to move. Tracy pushes off Tom with her hands and remains in contact with Tom’s hands, applying a

  2. science

    Tom the cat is chasing Jerry the mouse across a table surface 2.4 m off the floor. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 2 m/s.What speed will Tom have just before

  3. algebra

    Take any number (except for 1). Square that number and then subtract one. Divide by one less than your original number. Now subtract your original number. You reached 1 for an answer, didn’t you? How does this number game work?

  4. Mathematics

    Simplify the expression. (6x^-2)^2(0.5x)^4. Show your work. I know that the answer is 9x^2-+4 I just need help showing the work. PLEASE HELP!

You can view more similar questions or ask a new question.