Lesson Plan: Subtracting Ones from Two-Digit Numbers without Regrouping | Nagwa Lesson Plan: Subtracting Ones from Two-Digit Numbers without Regrouping | Nagwa

# Lesson Plan: Subtracting Ones from Two-Digit Numbers without Regrouping Mathematics • 1st Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to subtract a one-digit number from a two-digit number without regrouping.

#### Objectives

Students will be able to

• count back to subtract a one-digit number from a two-digit number without crossing a ten,
• subtract one-digit numbers from two-digit numbers using place value blocks,
• subtract one-digit numbers from two-digit numbers, recording the calculation in a place value chart,
• use place value language to describe subtraction,
• solve word problems involving subtraction of one-digit numbers from two-digit numbers without regrouping.

#### Prerequisites

Students should already be familiar with

• subtracting numbers within 10,
• modeling subtractions using objects, counters, or blocks.

#### Exclusions

Students will not cover

• subtracting a one-digit number from a two-digit number with regrouping,
• using the formal column method to subtract.

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