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Step 22 Lesson 4

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Subtraction


Objectives

To become more confident with subtraction and regrouping using the column method.

Resources

Abacus 4 Textbook 2 | Squared paper | Year 4 Subtraction using the compact column methodΒ (YouTube)


Today's Lesson

Main Activity

For the next two lessons, create some angle and degree-related exercises for the start of each lesson.

For example:Β 

Lesson Four – How many degrees are there in a right angle, two right angles, a circle, half a right angle, and so on?

Turn to page 68 in Abacus 4 Textbook 2.

Ask your student to copy and complete the calculations on the page. Remind them that they must only regroup when the bottom digit is greater than the top digit.

Citations

[1] www.youtube.com