Harder mental addition (One minute challenge)

Don't expect to whizz through these questions at the speed of light as they are hard! You will need all your addition skills.

Have a look at some of our popular resources in this category.

Add these multiples of one million. How many can you answer in a minute?

Add a multiple of 1,000 to make 100,000. How many can you answer in a minute?

Add two 6-digit multiples of 10,000. How many can you answer in a minute?

Add a multiple of 10,000 to make 1,000,000. How many can you answer in a minute?

Add these large numbers. How many can you answer in a minute?

What is needed to make the total 1. How many can you answer in a minute?

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