Timed: add hundreds of thousands

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

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What is needed to make the total 1. 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?

Fill in the missing number in the written addition question.

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