Math Practice 101
Homework Explained - Math Practice 101

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Grade 3 Go Math Practice - Answer Keys
Chapter 1: Lesson 9: Mental Math Strategies for Subtraction


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Lesson Check

  • Question 1 (request help)

    One day, a baker made 54 fruit pies. At the end of the day, only 9 of the pies were NOT sold. How many pies were sold that day?
    • 43
    • 45
    • 63
    • 65
  • Question 2 (request help)

    George’s father bought a 50-pound bag of wild bird seed. At the end of two weeks, 36 pounds of seed were left in the bag. How many pounds of seed had been used?
    • 14 pounds
    • 24 pounds
    • 26 pounds
    • 86 pounds

Spiral Review

  • Question 3 (request help)

    For a party, Shaun blew up 36 red balloons, 28 white balloons, and 24 blue balloons. How many balloons did he blow up in all?
    • 78
    • 81
    • 87
    • 88
  • Question 4 (request help)

    Tiffany has read 115 pages of her book. She has 152 pages left to read. How many pages are in the book?
    • 37
    • 267
    • 277
    • 367
  • Question 5 (request help)

    The flower shop had 568 flowers on Monday. By Tuesday, the shop had 159 flowers left. About how many flowers had been sold?
    • about 200
    • about 300
    • about 400
    • about 500
  • Question 6 (request help)

    There are 383 books in one section of the school library. Of the books, 165 are fiction books. Which is the best estimate of the number of books in that section that are NOT fiction?
    • about 200
    • about 300
    • about 400
    • about 500

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