Members Only Math PowerPoint Grade 2

Subtraction With Regrouping Vocabulary and Concepts PowerPoint

About This Resource

A 14-slide teaching PowerPoint that introduces Grade 2 students to the vocabulary and concept of subtraction with regrouping, using base-10 block diagrams to show exactly what happens when a ten is traded for ten ones.

Overview

The presentation opens with learning objectives and key vocabulary (tens, ones, regroup, trade, difference), then moves through a quick review of subtraction without regrouping before introducing a new problem that does need regrouping. Step-by-step block diagrams show the trade happening visually, and the presentation includes guided practice, a common-mistake discussion slide, a real-life word problem, and a "which of these need regrouping?" check for understanding before a closing review. It is designed to be taught interactively, with teacher pauses for questioning built into the flow rather than read straight through.

Resource Details

Subject: Math
Topic: Subtraction With Regrouping
Category: Addition & Subtraction
File Type: PPTX
File Size: 132.3 KB
Published: 07 Sep 2026
Downloads: 0

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Students will be able to define regroup, trade, tens, ones, and difference in their own words.
Students will be able to identify whether a two-digit subtraction problem requires regrouping by comparing the ones digits.
Students will be able to describe, step by step, how a ten is traded for ten ones during regrouping.
Students will be able to apply regrouping to solve a real-life word problem.

Classroom Activities

Show, Don't Tell: after the presentation, give pairs of students a new two-digit subtraction problem on a card and ask them to act out the trade using their own blocks while narrating each step out loud to their partner, without looking back at the slides.

Teacher Tips

Slow down on the two step-by-step diagram slides (52 − 27 and 74 − 56) — resist the urge to click through quickly. Ask students to predict the next step before you reveal it, which turns a demonstration slide into an active thinking moment.

Differentiation

SUPPORT: Pause more frequently and repeat key vocabulary chorally; allow students to answer check-for-understanding questions by pointing or writing rather than speaking aloud.
ON-LEVEL: Follow the presentation at its normal pace, answering questions verbally as they come up.
CHALLENGE: After the presentation, ask students to create and solve their own subtraction problem that requires regrouping, then explain it to a partner using the same vocabulary introduced in the slides.

Assessment

Oral questioning during the presentation, thumbs up or mini-whiteboard responses during the "which of these need regrouping?" slide, and observation of student explanations during guided practice.