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3 Digit Subtraction with Regrouping #3 - Subtracting Across Zeros - A NEW Way
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Description

There is an easier way to subtract from 100 that doesn't require regrouping! Students will learn about the "-1 strategy" and see why this Subtraction Shortcut works using a number line. This is a subtraction with regrouping lesson that will deepen and extend your 2nd and 3rd grade students' understanding of the number system.

Video instructions for students are embedded in the activity, making it easy for you to assign as a no prep math station, seatwork, homework or when you have a substitute.

This resource can be easily assigned in Google Classroom or any other platform compatible with Google Slides. Homeschool parents can use this resource by simply opening it in Google Slides. All you need to access Google Slides is a free Gmail account.

Save 40% by purchasing the 3-Digit Subtraction with Regrouping Bundle!

You may also be interested in the 2-Digit Subtraction with Regrouping Bundle.

What's Included?

  • PDF with a Link to make a copy of the Google Slides in your Google Drive
  • 2-part video lesson to guide students through the activities (Student devices must be able to access You-Tube)
  • 11 interactive student slides
  • Key

Topics include:

  • Subtracting a 2-digit number from 100, using the traditional algorithm with regrouping
  • "-1 strategy" to eliminate the need to regroup
  • Looking for patterns to draw conclusions about when the "-1 strategy" is helpful and when you shouldn't use it

Ideas on how to use this resource:

  • Use it as a whole class teaching tool by projecting the slides and using the movable, interactive pieces to teach your lesson
  • Use this resource as a no prep math station
  • Use this resource for small group reteach or tutoring
  • Assign this resource as a lesson for student practice as independent work
  • Share the digital key for parents and students to check work at home

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Teacher reviews

“Great resource to use for students that needed extra help with subtraction. Another strategy that helped many of my students.”
brandi G.
“great resource. My students really enjoyed using this.”
Super 2.
See 9 more reviews

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Meet the Seller

Marvel Math

✉ Message

In addition to my work in education, I also run a STEM-based Christmas Light Show business. When I'm not creating new math resources or working with teachers, I'm designing and fabricating light shows sequenced to music with my husband and our team. That business came about after our family was featured on ABC's The Great Christmas Light Fight. My son attends the University of Texas, Austin and I'm currently soaking up every last minute with my daughter, a high school senior.

San Antonio, Texas

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