Number Facts

There are 2 main types of number facts. There are the times tables, or multiplication facts, and the addition facts, of which the most important are the number bonds to 10 - the pairs of numbers that add up to 10.


Addition Facts

Number bonds to 10

I regard the number bonds to 10 as the most important number facts. This is because they can be applied to so much more calculation.

The pairs are: 0 and 10, 1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5.

So 1 + 9 = 10, 9 + 1 = 10, 10 - 1 = 9 and 10 - 9 = 1.

Here is a video with ideas of how to learn the pairs to 10.

Learning the pairs to 10


Once you know the pairs to 10, apply them to pairs to 20 and pairs of 10 to 100.

We can calculate 11 + 9 = 20 (because 1 + 9 = 10) or 90 + 10 = 100.

Applying the pairs to 10 part 1



Time tables

As with the addition facts, knowing the times tables helps in many forms of calculation. There is a series of 3 videos looking at 3 aspects of learning and applying the times tables. The first 2 have now been published.

The first video looks at learning the tables by rote, with some useful ideas.

maths@home: learning the tables by rote


The second video looks at the patterns which help learn the times tables. Some of the resources suggested are available here.

maths@home looking at the patterns in the times tables


The third video looks at arrays, which show the relationship between multiplication and division.

maths@home: times tables 3 - arrays


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