Lesson: Column Subtraction of Three-Digit Numbers: Regrouping Tens Mathematics • 2nd Grade

In this lesson, we will learn how to subtract from three-digit numbers when we have to regroup a ten and record the calculation in columns.

Lesson Plan

Students will be able to

subtract two- and three-digit numbers from three-digit numbers with regrouping of tens,
make connections between concrete and abstract models of regrouping,
use a formal algorithm to solve calculations.

Q1:

You can regroup tens to help you solve subtraction problems.

Find .

Q2:

Natalie has regrouped a ten to help her solve this subtraction problem.

Find .

Q3:

Ethan is subtracting 136 from 273.

How many ones will he have after regrouping?

Find the answer to .