Which order should I add numbers in?

Snoot and Fin count spaceships from the space station.

Which order is best?

It doesn't matter which order you add numbers in. The answer will always be the same. Use the order that is easiest for you.

Top tip

You might find it easiest to add number bonds first.

If you had to add 3+5+7, you might want to add 3+7 first to make 10.

Which way round should I add two numbers?
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How can reordering numbers into number bonds help me add them?
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