2 Digit Subtraction No Regrouping with Base 10 Blocks

Support students with 2 digit subtraction using base 10 blocks with this hands on digital math resource. Students will use moveable pieces to practice subtraction problems using the place value strategy of base 10 blocks. Save time with this no prep resource that includes: 30 interactive slides, a self-grading Google form, a detailed answer key, and more!

WHY?

Using base 10 blocks is an effective way to support students in developing a conceptual understanding of subtraction. Representing equations with concrete models helps students understand why their answer is reasonable, leading students to develop a deeper knowledge of subtraction than just computing an algorithm.

The slides are designed for students to simultaneously model subtraction equations with base 10 blocks and the standard algorithm. Building a correlation between the equation and the physical model will help students build a strong foundation for subtraction as they move on to more advanced skills.

When teaching subtraction with regrouping, the concept of borrowing or carrying can be extremely confusing to students. Once students master subtracting numbers without regrouping using base 10 blocks, they can move onto subtraction with regrouping using the same model.

SAVE TIME and ENERGY creating activities for students with these no prep ready to go math centers.

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WHO? This set is designed for first and second grade students first learning subtracting double digit numbers.

Common Core Aligned to 2nd grade Number & Operations in Base 10 Standard.

CSS.MATH.CONTENT.2.NBT.B.5

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

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WHAT’S INCLUDED:

★Google Slide Digital Resource

20 interactive slides to solve double digit subtraction problems with base 10 blocks
Moveable pieces
Fill-in text boxes
Place mat to model equation with base 10 pieces
Standard Algorithm
10 interactive slides to solve double digit subtraction with standard algorithm
Example slide
Video Model- (youtube link) to show stow students how to complete activity
Blank slide to create additional problems
★2 Digit Subtraction NO Regrouping Worksheets

All problems in slides included in worksheets
Worksheet Answer keys
★Answer Key Slides

All problems modeled on answer key
★Recording Sheet

Printable sheet for students to record answers
Answer key
★Self-Grading Google Form

Assign to students after completing activity
Students can input their answers from the recording sheet into the Google form to receive immediate feedback
Feedback answers include link to picture of answer key slide
SAVE TIME & ENERGY going through each student’s Google Slide to check their answers!
★Easel Activity

Slides added to Easel for students to complete
Answer boxes and place value pieces added for each problem
★2 Printable Place Value Mats

Complete problems with physical base 10 pieces or dry erase markers
★PDF File with instructions for use and access to digital resources

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HOW TO USE?

Assign to students via Google classroom for math centers, independent practice, partner work, or distant learning.

Teach a Mini lesson on 2 digit subtraction with borrowing for whole class, small groups, or intervention.

Project the Google Slides presentation on the whiteboard, use the movable base 10 blocks to model each problem, and give students the place value mat or subtraction worksheet to follow along with the lesson.
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