Lesson: Column Addition of Two-Digit Numbers Mathematics • 2nd Grade

In this lesson, we will learn how to add two-digit numbers and record the calculation and any regrouping in columns using the standard algorithm.

Lesson Plan

Students will be able to

add two two-digit numbers using column addition where no regrouping is required,
make connections between concrete and abstract models of regrouping,
identify whether regrouping will be required in an addition,
add two two-digit numbers using column addition where regrouping of ones is required.

Q1:

Find two consecutive numbers whose sum is 41.

Q2:

A girl bought a dress for and a pair of shoes for . How much money did she spend?

Q3:

Find .

Hint: Do you have to regroup ones to make a ten?