Lesson: Column Addition of Two-Digit Numbers Mathematics • Second Year of Primary School

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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.

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.