Lesson: Missing Numbers in Addition and Subtraction Equations | Nagwa Lesson: Missing Numbers in Addition and Subtraction Equations | Nagwa

Lesson: Missing Numbers in Addition and Subtraction Equations Mathematics • 2nd Grade

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In this lesson, we will learn how to find any unknown in an addition or subtraction equation and how to describe multiple possible ways to fill in two missing numbers with numbers up to 100.

Lesson Plan

Students will be able to

  • represent equations with missing numbers using part–whole models,
  • count on or back to find a missing number in addition or subtraction equations,
  • use inverse operations to find a missing number in addition or subtraction equations,
  • find two unknowns in an addition equation (find multiple solutions or try to find all solutions),
  • find two unknowns in a subtraction equation (find multiple solutions or try to find all solutions).

Lesson Playlist

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