Lesson Plan: Subtracting by Breaking Apart Tens and Ones | Nagwa Lesson Plan: Subtracting by Breaking Apart Tens and Ones | Nagwa

Lesson Plan: Subtracting by Breaking Apart Tens and Ones Mathematics • 2nd Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to subtract a two-digit number from a two-digit number without regrouping using decomposition by breaking apart tens and ones.

Objectives

Students will be able to

  • subtract by decomposing into tens and ones using place value charts and blocks,
  • subtract by decomposing into tens and ones using part–whole models,
  • solve two-digit subtraction shown in number sentences,
  • solve subtraction word problems using two-digit numbers.

Prerequisites

Students should already be familiar with

  • breaking two-digit numbers into tens and ones,
  • subtracting tens or ones on a hundred chart,
  • decomposing numbers using part–whole models.

Exclusions

Students will not cover

  • regrouping tens and ones,
  • subtraction by crossing the tens barrier,
  • subtracting numbers other than two-digit numbers,
  • subtracting numbers with regrouping required,
  • subtracting using number lines,
  • column subtraction.

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