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Worksheet: Modeling Word Problems with Two-Step Equations

Q1:

A mailman has to deliver letters to 76 houses. In the first street, he delivered to 28 houses, and, in the next street, he delivered to 15 houses.

Pick one way to calculate the number of houses that are left.

  • A He has delivered to 2 8 1 5 = 1 3 houses. So, there are 7 6 1 3 = 6 3 houses left.
  • B He has delivered to 2 8 + 1 5 = 4 2 houses. So, there are 7 6 4 2 = 3 4 houses left.
  • C He has delivered to 2 8 + 1 5 = 4 3 houses. So, there are 7 6 4 3 = 3 2 houses left.
  • D He has delivered to 2 8 + 1 5 = 4 3 houses. So, there are 7 6 4 3 = 3 3 houses left.
  • EHe has delivered to 2 8 1 5 = 1 3 houses. So, there are 7 6 + 1 3 = 8 9 houses left.