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  The students in Mr. Beasley’s class are studying the planets in the solar system. So far they have studied 4 of the 9 planets. Which of the following could be used to find the number of planets that Mr. Beasley’s class has NOT yet studied?

  
  

   

  

   

  

   

  

   

  

  
  
  

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  About how many more bricks does Molly need to add to her pile to equal 50 kilograms?

  
  

  7

  8

  45

  46

  
  
  

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  Jamal spent $12 for 4 tickets. If each ticket was the same price, which equation could be used to find out how much he spent on each ticket?

  
  

  

  

  

  

  
  
  

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  Hakim was studying dinosaurs. He learned that the weight of an adult Diplodocus was about 2 times the weight of an adult Tyrannosaurus Rex. The letter t represents the weight of an adult Tyrannosaurus Rex. Which of the following could be used to find the weight of an adult Diplodocus?

  
  

  2 + t

  t - 2

  2 x t

  t ÷ 2

  
  
  

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