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Addition and Subtraction
Objectives
To add and subtract 2-digit numbers by subtracting multiples of 10 then ones.
Resources
Abacus Workbook 1 | Counters (or plastic fly and spider) | 📄 Adding 2-digit numbers | 📄 Subtracting 2-digit numbers | 📄 100 square
Vocabulary
addition | subtraction | tens | ones
Today's Lesson
Introduction
Before you start the lesson, watch these Recap Videos with your student.
Consolidate
Use today’s lesson to give your student time to consolidate any addition and subtraction strategies that are needed.
Use the examples from this step’s worksheet tasks, and the strategies already taught.
Workbook
To help your student consolidate their learning from today, please ask your student to complete the activities on page 55 of Abacus Workbook 1.
Quiz
*All quizzes on this course are optional, they do not count towards your student’s grade. If you decide to do them, they are a chance to explore your student's understanding of different topics.
If your student finds reading tricky, you can read them the questions.
If your student is unsure of an answer, talk with them about their ideas. You can also look back at previous lessons together.*