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Jack broke apart 5 times 216 as ( 5 times 200) + ( 5 times 16) to multiply mentally. What strategy did he use
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Jun 20, 2019
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Jack broke apart 5 times 216 as ( 5 times 200) + ( 5 times 16) to multiply mentally. What strategy did he use
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he used a method called foil .
Crypto
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Jun 24, 2019
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