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Just add a zero behind the number. (8 x 10 = 80)

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15y ago

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How do you use a shortcut to multiply tens by tens?

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How do you use a grid to subtract 1.65 minus 0.98?

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What is the answer to how can you use multiplying by tens to find the product of 82x40?

There are 4 tens in 40. If you multiply 82 by ten four times, you'll get the answer. 820 + 820 + 820 + 820 = 3280 82 x 40 = 3280