Find the missing digit

Find the missing digit. How many can you answer in a minute?

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Sets of ten questions revising mental subtraction of 2-digit numbers.

Tricky word problems all to do with subtraction. Get 10 out of 10 correct for an on-screen reward!

Subtract a multiple of 100,000 from a 6-digit number. How many can you answer in a minute?

Subtraction around the ten thousands boundary. How many can you answer in a minute?