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Questions answered by this video:
How do you subtract a number from a multiple of 10?
Is there a quick and easy shortcut or trick for subtracting numbers from multiples of ten?
How can you find 781000 - 301 quickly?
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This video shows a good and useful method for subtracting numbers from a multiple of ten, such as 10000, 800000, and 781000. Great for quick mental math computations.