Homework Explained - Math Practice 101

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Grade 4 HMH Go Math - Answer Keys


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  • Question 10 (request help)

    Communicate Explain how you know that 9 minutes is less than 600 seconds.

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  • Question 11 (request help)

    Draw lines to match equivalent time intervals. Some intervals might not have a match.

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One day is the length of time it takes Earth to make one complete rotation. One year is the time it takes Earth to revolve around the sun. To make the calendar match Earth’s orbit time, there are leap years. Leap years add one extra day to the year. A leap day, February 29, is added to the calendar every four years.

  • Question 12 (request help)

    How many days are there in 4 years, if the fourth year is a leap year? Explain. Make a table to help.

  •    days
  • Question 13 (request help)

    Parker was born on February 29, 2008. The second time he is able to celebrate on his actual birthday is in 2016. How many days old will Parker be on February 29, 2016?

  •    days

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