Math Practice 101
Homework Explained - Math Practice 101

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Grade 4 HMH Go Math - Answer Keys
Common Core


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Multiply Using Mental Math

Find the product. Tell which strategy you used.

  • Question 1 (request help)

    6 x 297          

    Think: 297 = 300 - 3
           6 x 297 = 6 x (300 - 3)
                       = (6 x 300) - (6 x 3)
                       = 1,800 - 18
                       = 1,782;

                       use subtraction

Problem Solving

  • Question 8 (request help)

    Section J in an arena has 20 rows. Each row has 15 seats. All tickets cost $18 each. If all the seats are sold, how much money will the arena collect for Section J?
  • $   
  • Question 9 (request help)

    At a high-school gym, the bleachers are divided into 6 equal sections. Each section can seat 395 people. How many people can be seated in the gym?
  •    people

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