question: Maddison has 5 boxes with 50 marbles in each box. Then she gets 20 marbles from her friend. How many marbles does she have now?
answer: Maddison has 5 x 50 = <<5*50=250>>250 marbles from her boxes.
  So she has a total of 250 + 20 = <<250+20=270>>270 marbles now.
  #### 270