Write an equation with an unknown for a word problem, part 2

In this 3rd grade math lesson, I write an equation for a two-step word problem, using a letter for the unknown. I also write another, different equation for the same problem - which usually you can indeed write several different equations to match a word problem. This word problem is about addition or subtraction, so our equations are simple. (Standard 3.OA.D.8)

See also

The connection with addition and subtraction

Write an equation with an unknown for a word problem, part 1

Math Mammoth Grade 3 curriculum

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