Lesson Plan

Fluently Subtracting within 1000

Start your students on subtracting three-digit numbers with this lesson that breaks the problems down by place values!
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Need extra help for EL students? Try the Sharing the Subtraction Process pre-lesson.
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Need extra help for EL students? Try the Sharing the Subtraction Process pre-lesson.

Learning Objectives

Students will be able to solve subtraction problems within 1,000.

The adjustment to the whole group lesson is a modification to differentiate for children who are English learners.
EL adjustments

Introduction

(15 minutes)
Subtraction Math
  • Invite students to bring their math journals and a pencil to the class meeting area.
  • Tell them to place their supplies on the floor next to them.
  • Tell the students that today we're going to learn a strategy for solving subtraction problems within 1,000.
  • Let the students know that to solve for these problems they must have a strong grasp of place value, which we will do a review of, before proceeding.
  • Write “Place Value” on the board. Under this term, write the following:
Place: The position of a digit in a number.     
10,000s      1,000s      100s      10s      1s 
Value: The value of the digit in its place
  • Ask students what the term place means in regards to a number. As the students share, place the correct definition next to the term.
  • Ask the students to share what the term value means in regards to a number. As the students share, place the correct definition next to the term.
  • Come up with a number, for example 14,262, to show the students how to correlate or determine the place and value of specific digits. Make a chart on the board showing these values. For example:
                   1             4           2          6        2 
Place:       10,000s       1,000s       100s       10s       1s           
Value:       10,000        4,000        200        60        2
                (10,000x1)    (1000x4)     (100x2)    (10x6)    (1x2)

Beginning

  • Provide student-friendly definitions for "place value," "regroup," "subtract," "thousands," "hundreds," "tens," and "ones" in their home language (L1).

Intermediate

  • Have students repeat the information about place value to a partner.
  • Have students read aloud the number 14,262 (fourteen thousand two hundred and sixy-two) before discussing where each digit falls in the place value chart.