Year 3- MathsWeek 13

Lesson 1

LO: We are learning to add 2 three digit numbers that do not cross 10 or 100.

Can you explain why?

What can you remember about adding 2 three digit numbers?

How and why do you use exchange in your calculations?

Click the picture to remind yourself how to use the column method.

What can you remember about adding 2 three digit numbers with 1 exchange?

Why is it important to put the digits in the correct column?

Task 1

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Task 2

Lesson 2

LO: We are learning to add 2 three digit numbers that cross 10 or 100.

Can you explain why?

Why do you have to add the digits from the right to the left?

Would the answer be the same if you went left to right?

Task 1

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Task 2

Lesson 3

LO: We are learning to subtract 2 three digit numbers with no exchange.

Can you explain why?

Click the picture to remind yourself how to use the column method for subtraction.

Task 1

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Task 2

Lesson 4

LO: We are learning to subtract 2 three digit numbers with 1 exchange.

Can you explain why?

Task 1

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Task 2