Lesson Plan: Subtracting by Adding with Numbers up to 20 | Nagwa Lesson Plan: Subtracting by Adding with Numbers up to 20 | Nagwa

Lesson Plan: Subtracting by Adding with Numbers up to 20 Mathematics • 1st Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to use related addition facts to solve or check a subtraction equation.

Objectives

Students will be able to

  • use related addition facts to solve a subtraction equation,
  • find a missing number in an addition equation and then complete a subtraction equation,
  • use related addition facts to check the answers to subtraction equations,
  • use related addition facts to solve a subtraction story problem.

Prerequisites

Students should already be familiar with

  • adding numbers up to 20,
  • subtracting numbers up to 20.

Exclusions

Students will not cover

  • numbers greater than 20,
  • writing fact families.

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