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Subtraction

Objectives

To subtract using the column method.

To recap how to subtract by regrouping from columns to the left when necessary.

To subtract by counting backwards.

Resources

Abacus 4 Textbook 1 | Squared paper | Expanded Subtraction Methods (YouTube) | Compact Column Subtraction (YouTube)

Today's Lesson

Main Activity

Turn to page 77 in Abacus 4 Textbook 1.

Use Expanded Subtraction Methods (YouTube) and Compact Column Subtraction (YouTube) to recap if needed.

Continue to use the regrouping method. Ask your student to work independently to complete the page.

Citations

[1] www.youtube.com [2] www.youtube.com [3] www.youtube.com [4] www.youtube.com