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Addition and Subtraction
This step, Lessons 3 & 4 are combined.
Objectives
To consolidate adding and subtracting of 20, 30, 40, 50 to and from 2-digit numbers.
Resources
Abacus Workbook 1 | 📄 Add and subtract multiples of 10 | 📄 Add and subtract multiples of 10 (more) | 0-100 bead string | 📄 0-100 beaded line | 📄 100 square
Vocabulary
add | subtract
Today's Lesson
What to Get Ready
Familiarise yourself with the tasks in the 📄 Add and subtract multiples of 10 and 📄 Add and subtract multiples of 10 (more) sheets.
Introduction
Before you start the lesson, watch these Recap Videos with your student.
Main Activity
Ask your student to work through the 📄 Add and subtract multiples of 10 and 📄 Add and subtract multiples of 10 (more) sheets as a way of consolidating and applying the skills they have learnt this step.
Prompt them to use the 📄 0-100 beaded line and 100 square grid as needed. Other than that, try to encourage as much independent learning as possible over these two lessons.
Your student may work through all the sheets in one go, or you may prefer them to split them up over two days.
Workbook
To help your student consolidate their learning from today, please ask them to complete the activities on page 40 of Abacus Workbook 1.