Mathematics, 22.09.2019 03:20 xxxanitaxxx

Jack broke apart 5 x 216 as (5 x 200) + (5 x 16) to multiply mentally. what strategy did he use?
commutative property
associative property
halving and doubling
distributive property

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Jack broke apart 5 x 216 as (5 x 200) + (5 x 16) to multiply mentally. what strategy did he use?