Addition & Subtraction with Place Value

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Addition & Subtraction with Place Value

What do you already know about using place value for addition and subtraction?

Learning Objective

At the end of the lesson you will be able to solve addition and subtraction problems by using place value.

Check-in

How do you feel about addition and subtraction? Let us warm up and have some fun together!

Mental Maths Warm Up

Add and subtract using place value: 15 + 5 | 20 + 10 | 300 + 40 | 120 + 80 | 1,000 + 200 500 
2 200 | 1,000 7f
2 300 | 850 7f
2 50

Thinking About Place Value

What did you notice about the numbers? Think about hundreds, tens, and ones!

Written Addition Practice

Model: 1,245 + 300 Try together: 2,346 + 400 3,120 + 50 Focus on which digits change. Understanding is more important than speed!

Written Subtraction Practice

Model: 3,200 7f
2 400 Try together: 2,450 7f
2 200 1,860 7f
2 60 Use place value language: hundreds, tens, and ones.

Challenge: Borrowing

If you want a challenge and feel comfortable: 2,304 7f
2 128. We will explain borrowing slowly. Remember, it27s OK to stop if you feel frustrated.

What did you learn today?

Reflect on how place value helps with addition and subtraction. What will you practise next time?

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.