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# Tuesday

Today we will be learning about fact families.

Make sure you have resources to help you Parents:

A fact family is a group of math facts using the same numbers. In the case of addition/subtraction, you use three numbers to create a fact family. For example, you can form a fact family using the three numbers 8, 2, and 10: 8 + 2 = 10, 2 + 8 = 10, 10 − 8 = 2, and 10 − 2 = 8.

Children explore addition and subtraction fact families for numbers within 20. They should work concretely (with resources) and pictorially (use drawings) to find links between the addition and subtraction sentences. They should recognise that addition and subtraction are inverse operations (they undo each other). Children should begin to understand that addition is commutative (3 + 2 = 2 +3) but subtraction is not (3 - 2 is not the same as 2 - 3).

Maths Talk ( example of questions to ask)

What’s the same and what’s different?
If we know 12 + 1 = 13, what else do we know?
Can you see any patterns?
If we know that 15 – 3 = 12, why can’t we say 3 − 15 = 12?

## Year 1 - Week 3 - Lesson 2 - Fact families - linking addition and subtraction (1)

This is "Year 1 - Week 3 - Lesson 2 - Fact families - linking addition and subtraction (1)" by White Rose Maths on Vimeo, the home for high quality videos...

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