Lesson Plan: Subtracting Ones from Two-Digit Numbers on a Number Line | Nagwa Lesson Plan: Subtracting Ones from Two-Digit Numbers on a Number Line | Nagwa

# Lesson Plan: Subtracting Ones from Two-Digit Numbers on a Number Line Mathematics • 2nd Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to count backward on number lines to subtract single-digit numbers from two-digit numbers.

#### Objectives

Students will be able to

• count back along a number line to subtract a single-digit number from a two-digit number,
• use partitioning to help subtract across a 10,
• apply knowledge of subtracting using a number line when solving word problems.

#### Prerequisites

Students should already be familiar with

• subtracting single digits from two-digit numbers using a hundred chart,
• partitioning to help with calculations.

#### Exclusions

Students will not cover

• subtracting ones from two-digit numbers without using a number line,
• subtracting two-digit numbers,
• subtracting from three-digit numbers.